asgardius/android_kernel_motorola_sm6225
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mmc: sdhi: do not install dummy callbacks

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Currently the SDHI glue for the TMIO MMC driver installs dummy .get_cd() and
.set_pwr() callbacks even if the platform didn't supply them. This is not
necessary, since the TMIO MMC driver itself checks for NULL callbacks. This
is also dubious if the platform provides a regulator for SD-card power
switching. It is better to only install those callbacks, if they are really
provided by the platform.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Guennadi Liakhovetski 2012-06-20 19:10:34 +02:00 committed by Chris Ball
parent b958a67c6b
commit 71da63e767
1 changed files with 6 additions and 8 deletions
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14
drivers/mmc/host/sh_mobile_sdhi.c
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@ -64,18 +64,14 @@ static void sh_mobile_sdhi_set_pwr(struct platform_device *pdev, int state)
{
struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
if (p && p->set_pwr)
p->set_pwr(pdev, state);
p->set_pwr(pdev, state);
}
static int sh_mobile_sdhi_get_cd(struct platform_device *pdev)
{
struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
if (p && p->get_cd)
return p->get_cd(pdev);
else
return -ENOSYS;
return p->get_cd(pdev);
}
static int sh_mobile_sdhi_wait_idle(struct tmio_mmc_host *host)
@ -153,8 +149,10 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
goto eclkget;
}
mmc_data->set_pwr = sh_mobile_sdhi_set_pwr;
mmc_data->get_cd = sh_mobile_sdhi_get_cd;
if (p->set_pwr)
mmc_data->set_pwr = sh_mobile_sdhi_set_pwr;
if (p->get_cd)
mmc_data->get_cd = sh_mobile_sdhi_get_cd;
mmc_data->clk_enable = sh_mobile_sdhi_clk_enable;
mmc_data->clk_disable = sh_mobile_sdhi_clk_disable;
mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED;