openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

mmc: slot-gpio: Fix missing assignment to ctx->ro_gpio 

mmc_gpio_request_ro() doesn't store the requested gpio in ctx->ro_gpio.
As a result, subsequent calls to mmc_gpio_get_ro() will always fail
with -ENOSYS because the gpio number isn't available to that function.

Cc: stable <stable@vger.kernel.org>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Chris Ball 2012-09-09 22:56:48 -04:00
parent 0d4de8f5de
commit 15e8a8e429
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/mmc/core/slot-gpio.c
View File

@ -100,7 +100,13 @@ int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio)
ctx = host->slot.handler_priv;
return gpio_request_one(gpio, GPIOF_DIR_IN, ctx->ro_label);
ret = gpio_request_one(gpio, GPIOF_DIR_IN, ctx->ro_label);
if (ret < 0)
return ret;
ctx->ro_gpio = gpio;
return 0;
}
EXPORT_SYMBOL(mmc_gpio_request_ro);