[ Upstream commit b5c9ee8296a3760760c7b5d2e305f91412adc795 ]
Add check for the return value of kstrdup() and return the error
if it fails in order to avoid NULL pointer dereference.
Fixes: b4f8e52b89 ("rpmsg: Introduce Qualcomm RPM glink driver")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20230619030631.12361-1-jiasheng@iscas.ac.cn
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 3e74ec2f39362bffbd42854acbb67c7f4cb808f9 ]
In the event that an intent advertisement arrives on an unknown channel
the fifo is not advanced, resulting in the same message being handled
over and over.
Fixes: dacbb35e93 ("rpmsg: glink: Receive and store the remote intent buffers")
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230214234231.2069751-1-quic_bjorande@quicinc.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 766279a8f85df32345dbda03b102ca1ee3d5ddea upstream.
The use of strncpy() is considered deprecated for NUL-terminated
strings[1]. Replace strncpy() with strscpy_pad(), to keep existing
pad-behavior of strncpy, similarly to commit 08de420a8014 ("rpmsg:
glink: Replace strncpy() with strscpy_pad()"). This fixes W=1 warning:
In function ‘qcom_glink_rx_close’,
inlined from ‘qcom_glink_work’ at ../drivers/rpmsg/qcom_glink_native.c:1638:4:
drivers/rpmsg/qcom_glink_native.c:1549:17: warning: ‘strncpy’ specified bound 32 equals destination size [-Wstringop-truncation]
1549 | strncpy(chinfo.name, channel->name, sizeof(chinfo.name));
[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220519073330.7187-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Andrew Chernyakov <acherniakov@astralinux.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 65382585f067d4256ba087934f30f85c9b6984de ]
of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Fixes: 53e2822e56 ("rpmsg: Introduce Qualcomm SMD backend")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220511120737.57374-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 59d6f72f6f9c92fec8757d9e29527da828e9281f ]
irq_of_parse_and_map() returns 0 on failure, so this should not be
passed further as error return code.
Fixes: 1a358d350664 ("rpmsg: qcom_smd: Fix irq_of_parse_and_map() return value")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220423093932.32136-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 7a534ae89e34e9b51acb5a63dd0f88308178b46a upstream.
struct rpmsg_eptdev contains a struct cdev. The current code frees
the rpmsg_eptdev struct in rpmsg_eptdev_destroy(), but the cdev is
a managed object, therefore its release is not predictable and the
rpmsg_eptdev could be freed before the cdev is entirely released.
The cdev_device_add/del() API was created to address this issue
(see commit '233ed09d7fda ("chardev: add helper function to register
char devs with a struct device")'), use it instead of cdev add/del().
Fixes: c0cdc19f84 ("rpmsg: Driver for user space endpoint interface")
Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220110104706.v6.2.Idde68b05b88d4a2e6e54766c653f3a6d9e419ce6@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 26594c6bbb60c6bc87e3762a86ceece57d164c66 ]
When idr_find() returns NULL to intent, no error return code of
qcom_glink_rx_data() is assigned.
To fix this bug, ret is assigned with -ENOENT in this case.
Fixes: 64f95f8792 ("rpmsg: glink: Use the local intents when receiving data")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Link: https://lore.kernel.org/r/20210306133624.17237-1-baijiaju1990@gmail.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 4fcdaf6e28d11e2f3820d54dd23cd12a47ddd44e ]
The open_req and open_ack completion variables are the state variables
to represet a remote channel as open. Use complete_all so there are no
races with waiters and using completion_done.
Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: Deepak Kumar Singh <deesin@codeaurora.org>
Link: https://lore.kernel.org/r/1593017121-7953-2-git-send-email-deesin@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit e69ee0cf655e8e0c4a80f4319e36019b74f17639 ]
We need to call of_node_put(node) on the error paths for this function.
Fixes: 53e2822e56 ("rpmsg: Introduce Qualcomm SMD backend")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200908071841.GA294938@mwanda
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit f0beb4ba9b185d497c8efe7b349363700092aee0 upstream.
It is possible for the chunk sizes coming from the non RPM remote procs
to not be word aligned. Remove the alignment warning and continue to
read from the FIFO so execution is not stalled.
Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit c3dadc19b7564c732598b30d637c6f275c3b77b6 upstream.
Attempting to transmit rx_done messages after the GLINK instance is
being torn down will cause use after free and memory leaks. So cancel
the intent_work and free up the pending intents.
With this there are no concurrent accessors of the channel left during
qcom_glink_native_remove() and there is therefor no need to hold the
spinlock during this operation - which would prohibit the use of
cancel_work_sync() in the release function. So remove this.
Fixes: 1d2ea36eea ("rpmsg: glink: Add rx done command")
Cc: stable@vger.kernel.org
Acked-by: Chris Lew <clew@codeaurora.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit f7e714988edaffe6ac578318e99501149b067ba0 upstream.
The device release function is set before registering with rpmsg. If
rpmsg registration fails, the framework will call device_put(), which
invokes the release function. The channel create logic does not need to
free rpdev if rpmsg_register_device() fails and release is called.
Fixes: b4f8e52b89 ("rpmsg: Introduce Qualcomm RPM glink driver")
Cc: stable@vger.kernel.org
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b646293e272816dd0719529dcebbd659de0722f7 upstream.
In a remote processor crash scenario, there is no guarantee the remote
processor sent close requests before it went into a bad state. Remove
the reference that is normally handled by the close command in the
so channel resources can be released.
Fixes: b4f8e52b89 ("rpmsg: Introduce Qualcomm RPM glink driver")
Cc: stable@vger.kernel.org
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Chris Lew <clew@codeaurora.org>
Reported-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ac74ea01860170699fb3b6ea80c0476774c8e94f upstream.
Extra channel reference put when remote sending OPEN_ACK after timeout
causes use-after-free while handling next remote CLOSE command.
Remove extra reference put in timeout case to avoid use-after-free.
Fixes: b4f8e52b89 ("rpmsg: Introduce Qualcomm RPM glink driver")
Cc: stable@vger.kernel.org
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 4623e8bf1de0b86e23a56cdb39a72f054e89c3bd upstream.
When wrapping around the FIFO, the remote expects the tail pointer to
be reset to 0 on the edge case where the tail equals the FIFO length.
Fixes: caf989c350 ("rpmsg: glink: Introduce glink smem based transport")
Cc: stable@vger.kernel.org
Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 928002a5e9dab2ddc1a0fe3e00739e89be30dc6b ]
The current rx peak function fails to read the data if size is
less than 4bytes.
Use memcpy_fromio to support data reads of size less than 4 bytes.
Cc: stable@vger.kernel.org
Fixes: f0beb4ba9b18 ("rpmsg: glink: Remove chunk size word align warning")
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 940c620d6af8fca7d115de40f19870fba415efac upstream.
Currently a failed allocation of channel->name leads to an
immediate return without freeing channel. Fix this by setting
ret to -ENOMEM and jumping to an exit path that kfree's channel.
Detected by CoverityScan, CID#1473692 ("Resource Leak")
Fixes: 53e2822e56 ("rpmsg: Introduce Qualcomm SMD backend")
Cc: stable@vger.kernel.org
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add compat ioctl callback to support 32bit user space applications.
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Channels may need to identify the edge their channel was probed for.
Store the edge name by reading the label property from device tree or
default to the node name.
Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Some of the rpmsg devices need to switch on power domains to communicate
with remote processor. For example on Qualcomm DB820c platform LPASS
power domain needs to switched on for any kind of audio services.
This patch adds the missing power domain support in rpmsg core.
Without this patch attempting to play audio via QDSP on DB820c would
reboot the system.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This patch fixes below kerneldoc warnings
qcom_smd.c:141: warning: Function parameter or member 'dev' not described in 'qcom_smd_edge'
qcom_smd.c:141: warning: Function parameter or member 'name' not described in 'qcom_smd_edge'
qcom_smd.c:141: warning: Function parameter or member 'new_channel_event' not described in 'qcom_smd_edge'
qcom_smd.c:222: warning: Function parameter or member 'qsept' not described in 'qcom_smd_channel'
qcom_smd.c:222: warning: Function parameter or member 'registered' not described in 'qcom_smd_channel'
qcom_smd.c:222: warning: Function parameter or member 'state_change_event' not described in 'qcom_smd_channel'
qcom_smd.c:222: warning: Function parameter or member 'drvdata' not described in 'qcom_smd_channel'
qcom_smd.c:737: warning: Function parameter or member 'wait' not described in '__qcom_smd_send'
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Fix below kerneldoc warnings while building with W=1
qcom_glink_native.c:53: warning: Function parameter or member 'data' not described in 'glink_defer_cmd'
qcom_glink_native.c:75: warning: Function parameter or member 'data' not described in 'glink_core_rx_intent'
qcom_glink_native.c:75: warning: Function parameter or member 'id' not described in 'glink_core_rx_intent'
qcom_glink_native.c:75: warning: Function parameter or member 'size' not described in 'glink_core_rx_intent'
qcom_glink_native.c:75: warning: Function parameter or member 'reuse' not described in 'glink_core_rx_intent'
qcom_glink_native.c:75: warning: Function parameter or member 'in_use' not described in 'glink_core_rx_intent'
qcom_glink_native.c:75: warning: Function parameter or member 'offset' not described in 'glink_core_rx_intent'
qcom_glink_native.c:75: warning: Function parameter or member 'node' not described in 'glink_core_rx_intent'
qcom_glink_native.c:116: warning: Function parameter or member 'features' not described in 'qcom_glink'
qcom_glink_native.c:116: warning: Function parameter or member 'intentless' not described in 'qcom_glink'
qcom_glink_native.c:524: warning: Function parameter or member 'version' not described in 'qcom_glink_receive_version'
qcom_glink_native.c:524: warning: Function parameter or member 'features' not described in 'qcom_glink_receive_version'
qcom_glink_native.c:524: warning: Excess function parameter 'r_version' description in 'qcom_glink_receive_version'
qcom_glink_native.c:524: warning: Excess function parameter 'r_features' description in 'qcom_glink_receive_version'
qcom_glink_native.c:551: warning: Function parameter or member 'version' not described in 'qcom_glink_receive_version_ack'
qcom_glink_native.c:551: warning: Function parameter or member 'features' not described in 'qcom_glink_receive_version_ack'
qcom_glink_native.c:551: warning: Excess function parameter 'r_version' description in 'qcom_glink_receive_version_ack'
qcom_glink_native.c:551: warning: Excess function parameter 'r_features' description in 'qcom_glink_receive_version_ack'
qcom_glink_native.c:570: warning: bad line: wire format and transmit
qcom_glink_native.c:604: warning: Function parameter or member 'intent' not described in 'qcom_glink_advertise_intent'
qcom_glink_native.c:604: warning: Excess function parameter 'size' description in 'qcom_glink_advertise_intent'
qcom_glink_native.c:710: warning: Function parameter or member 'glink' not described in 'qcom_glink_handle_intent_req'
qcom_glink_native.c:710: warning: Function parameter or member 'cid' not described in 'qcom_glink_handle_intent_req'
qcom_glink_native.c:710: warning: Function parameter or member 'size' not described in 'qcom_glink_handle_intent_req'
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
As intent structure members are not correctly annotated, leading to below warnings
qcom_glink_native.c:614:16: warning: incorrect type in assignment (different base types)
qcom_glink_native.c:614:16: expected unsigned short [unsigned] [usertype] id
qcom_glink_native.c:614:16: got restricted __le16 [usertype] <noident>
qcom_glink_native.c:615:18: warning: incorrect type in assignment (different base types)
qcom_glink_native.c:615:18: expected unsigned short [unsigned] [usertype] lcid
qcom_glink_native.c:615:18: got restricted __le16 [usertype] <noident>
qcom_glink_native.c:616:19: warning: incorrect type in assignment (different base types)
qcom_glink_native.c:616:19: expected unsigned int [unsigned] [usertype] count
qcom_glink_native.c:616:19: got restricted __le32 [usertype] <noident>
qcom_glink_native.c:617:18: warning: incorrect type in assignment (different base types)
qcom_glink_native.c:617:18: expected unsigned int [unsigned] [usertype] size
qcom_glink_native.c:617:18: got restricted __le32 [usertype] <noident>
qcom_glink_native.c:618:18: warning: incorrect type in assignment (different base types)
qcom_glink_native.c:618:18: expected unsigned int [unsigned] [usertype] liid
qcom_glink_native.c:618:18: got restricted __le32 [usertype] <noident>
Fix this by correctly annotating them.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Add missing include of sizes.h.
drivers/rpmsg/qcom_smd.c: In function ‘qcom_smd_channel_open’:
drivers/rpmsg/qcom_smd.c:809:36: error: ‘SZ_4K’ undeclared (first use in this function)
bb_size = min(channel->fifo_size, SZ_4K);
^~~~~
Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
All the managed resources would be freed by the time release function
is invoked. Handling such memory in qcom_smd_edge_release() would do
bad things.
Found this issue while testing Audio usecase where the dsp is started up
and shutdown in a loop.
This patch fixes this issue by using simple kzalloc for allocating
channel->name and channel which is then freed in qcom_smd_edge_release().
Without this patch restarting a remoteproc would crash the system.
Fixes: 53e2822e56 ("rpmsg: Introduce Qualcomm SMD backend")
Cc: <stable@vger.kernel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Use the appropriate SPDX license identifier in the rpmsg char driver
source file and drop the previous boilerplate license text. The uapi
header file already had the SPDX license identifier added as part of
a mass update but the license text removal was deferred for later,
and this patch drops the same.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Use the appropriate SPDX license identifier in various rpmsg
glink driver source files and drop the previous boilerplate
license text.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Use the appropriate SPDX license identifier in the rpmsg SMD backend
driver source file and drop the previous boilerplate license text.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Use the appropriate SPDX license identifier in the virtio rpmsg
bus driver source file and drop the previous boilerplate license
text.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Use the appropriate SPDX license identifier in the rpmsg core
source files and drop the previous boilerplate license text.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Attempt to acquire the APCS IPC through the mailbox framework and fall
back to the old syscon based approach, to allow us to move away from
using the syscon.
Reviewed-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This patch adds "driver_override" device attribute for rpmsg_device which
will allow users to explicitly specify the rpmsg_driver to be used via
sysfs entry.
The "driver_override" device attribute implemented here is very similar
to "driver_override" implemented for platform, pci, and amba bus types.
One important use-case of "driver_override" device attribute is to force
use of rpmsg_chrdev driver for certain rpmsg_device instances.
Signed-off-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
It is possible that incoming data arrives before the client driver has
reached a point in the probe method where adequate context for handling
the incoming message has been established.
In the event that the client's callback function returns an error the
message will be left on the FIFO and by invoking the receive handler
after the device has been probed the message will be picked off the FIFO
and the callback invoked again.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
For special rpmsg devices without a primary endpoint there is nothing to
announce so don't call the backend announce create function if we didn't
create an endpoint.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
The container_of macros should not use the same name for the parameter
as the member to use for lookup, as this will result in a compilation
error unless the passed parameter has the same name as the member.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
In an effort to pick up channels that are in a funky state we
optimistically tried to open all channels that we found, with the
addition that we failed if the other side did not handshake the opening.
But as we're starting the modem a second time all channels are found -
in a "funky" state - and we try to open them. But the modem firmware
requires the IPCRTR to be up in order to initialize. So any channels we
try to open before that will fail and will not be opened again.
This takes care of the regression, at the cost of reintroducing the
previous behavior of handling of channels with "funky" states.
Reverts commit c12fc4519f ("rpmsg: smd: Create device for all channels")
Reported-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Switch the tx_lock to a spinlock we allow clients to use rpmsg_trysend()
from atomic context.
In order to allow clients to sleep while waiting for space in the FIFO
we release the lock temporarily around the delay; which should be
replaced by sending a READ_NOTIF and waiting for the remote to signal
us that space has been made available.
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
By switching the tx_lock to a spinlock we allow clients to use
rpmsg_trysend() from atomic context.
The mutex was interruptable as it was previously held for the duration
of some client waiting for available space in the FIFO, but this was
recently changed to only be held temporarily - allowing us to replace it
with a spinlock.
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
if device_register() returned an error! Always use put_device()
to give up the reference initialized. unregister device for
other return error.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
if device_register() returned an error! Always use put_device()
to give up the reference initialized. And unregister device for
other return error.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:
for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
done
with de-mangling cleanups yet to come.
NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do. But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.
The next patch from Al will sort out the final differences, and we
should be all done.
Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This fixes a few issues found in the SMD and GLINK drivers and corrects the
handling of SMD channels that are found in an (previously) unexpected state.
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Merge tag 'rpmsg-v4.16' of git://github.com/andersson/remoteproc
Pull rpmsg updates from Bjorn Andersson:
"This fixes a few issues found in the SMD and GLINK drivers and
corrects the handling of SMD channels that are found in an
(previously) unexpected state"
* tag 'rpmsg-v4.16' of git://github.com/andersson/remoteproc:
rpmsg: smd: Fix double unlock in __qcom_smd_send()
rpmsg: glink: Fix missing mutex_init() in qcom_glink_alloc_channel()
rpmsg: smd: Don't hold the tx lock during wait
rpmsg: smd: Fail send on a closed channel
rpmsg: smd: Wake up all waiters
rpmsg: smd: Create device for all channels
rpmsg: smd: Perform handshake during open
rpmsg: glink: smem: Ensure ordering during tx
drivers: rpmsg: remove duplicate includes
remoteproc: qcom: Use PTR_ERR_OR_ZERO() in glink prob
We're not holding the lock here, so we shouldn't unlock.
Fixes: 178f3f75bb ("rpmsg: smd: Don't hold the tx lock during wait")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
[bjorn: renamed "out" label to further distinguish the two exit paths]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
