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wl1271: Fix msleep() delay while waiting for completion

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After last transmission, the device goes to sleep earlier
than the configured dynamic power save timeout. If timeout
is set to 400ms, device enters into sleep mode at around
330ms since from last TX.

This patch removes the msleep(1), which causes the delay
after ELP wakeup. Replaced with udelay(10), the variation
is around 7-10ms.

Signed-off-by: Saravanan Dhanabal <ext-saravanan.dhanabal@nokia.com>
Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Saravanan Dhanabal 2010-03-26 12:53:33 +02:00 committed by John W. Linville
parent c18995540c
commit bc0f03ea57
1 changed files with 8 additions and 1 deletions
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9
drivers/net/wireless/wl12xx/wl1271_cmd.c
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@ -36,6 +36,8 @@
#include "wl1271_cmd.h"
#include "wl1271_event.h"
#define WL1271_CMD_POLL_COUNT 5
/*
* send command to firmware
*
@ -52,6 +54,7 @@ int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
u32 intr;
int ret = 0;
u16 status;
u16 poll_count = 0;
cmd = buf;
cmd->id = cpu_to_le16(id);
@ -73,7 +76,11 @@ int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
goto out;
}
msleep(1);
udelay(10);
poll_count++;
if (poll_count == WL1271_CMD_POLL_COUNT)
wl1271_info("cmd polling took over %d cycles",
poll_count);
intr = wl1271_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
}