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Fix a NULL pointer exception for omap GPMC bus code if probe fails.

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Merge tag 'omap-for-v4.2/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Fix a NULL pointer exception for omap GPMC bus code if probe fails.

* tag 'omap-for-v4.2/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  memory: omap-gpmc: Don't try to save uninitialized GPMC context

Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Olof Johansson 2015-08-13 14:27:12 +02:00
commit 659181aedd
1 changed files with 6 additions and 0 deletions
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6
drivers/memory/omap-gpmc.c
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@ -2245,6 +2245,9 @@ void omap3_gpmc_save_context(void)
{ {
int i; int i;
if (!gpmc_base)
return;
gpmc_context.sysconfig = gpmc_read_reg(GPMC_SYSCONFIG); gpmc_context.sysconfig = gpmc_read_reg(GPMC_SYSCONFIG);
gpmc_context.irqenable = gpmc_read_reg(GPMC_IRQENABLE); gpmc_context.irqenable = gpmc_read_reg(GPMC_IRQENABLE);
gpmc_context.timeout_ctrl = gpmc_read_reg(GPMC_TIMEOUT_CONTROL); gpmc_context.timeout_ctrl = gpmc_read_reg(GPMC_TIMEOUT_CONTROL);
@ -2277,6 +2280,9 @@ void omap3_gpmc_restore_context(void)
{ {
int i; int i;
if (!gpmc_base)
return;
gpmc_write_reg(GPMC_SYSCONFIG, gpmc_context.sysconfig); gpmc_write_reg(GPMC_SYSCONFIG, gpmc_context.sysconfig);
gpmc_write_reg(GPMC_IRQENABLE, gpmc_context.irqenable); gpmc_write_reg(GPMC_IRQENABLE, gpmc_context.irqenable);
gpmc_write_reg(GPMC_TIMEOUT_CONTROL, gpmc_context.timeout_ctrl); gpmc_write_reg(GPMC_TIMEOUT_CONTROL, gpmc_context.timeout_ctrl);