Commit a3e5c371 authored Nov 16, 2016 by Maulik Shah

soc: qcom: rpm: Change driver memory allocation to use GFP_NOIO



When a filesystem driver calls into makes a RPM request, RPM driver
makes a kzalloc request with GFP_NOFS flag. This results in a
deadlock if a driver waiting on IO completion sends a RPM message.

Change memory allocation in the RPM driver to use GFP_NOIO.

Change-Id: Ie986b6eb21845b679f068372e46dfb402f234dcf
Signed-off-by: Maulik Shah <mkshah@codeaurora.org>

parent da2b3bff

drivers/soc/qcom/rpm-smd.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -81,7 +81,7 @@ static struct glink_apps_rpm_data *glink_data;
		#define DEFAULT_BUFFER_SIZE 256
		#define DEBUG_PRINT_BUFFER_SIZE 512
		#define MAX_SLEEP_BUFFER 128
		#define GFP_FLAG(noirq) (noirq ? GFP_ATOMIC : GFP_NOFS)
		#define GFP_FLAG(noirq) (noirq ? GFP_ATOMIC : GFP_NOIO)
		#define INV_RSC "resource does not exist"
		#define ERR "err\0"
		#define MAX_ERR_BUFFER_SIZE 128