diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-07-28 10:29:23 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-07-28 10:29:23 -0700 |
commit | 67eb890e5e132b56d9af7adf407e7c2a6ed248dc (patch) | |
tree | ee4f4308af5cd7c3af928c8de14c8c6b75a653e8 | |
parent | 02ff371afd92db14c9b5c9d09e2592dbb9ffae1a (diff) | |
parent | 5c02a4206538da12c040b51778d310df84c6bf6c (diff) | |
download | op-kernel-dev-67eb890e5e132b56d9af7adf407e7c2a6ed248dc.zip op-kernel-dev-67eb890e5e132b56d9af7adf407e7c2a6ed248dc.tar.gz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32
Pull AVR32 fix from Hans-Christian Egtvedt.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
avr32: handle NULL as a valid clock object
-rw-r--r-- | arch/avr32/mach-at32ap/clock.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/arch/avr32/mach-at32ap/clock.c b/arch/avr32/mach-at32ap/clock.c index 23b1a97..52c179b 100644 --- a/arch/avr32/mach-at32ap/clock.c +++ b/arch/avr32/mach-at32ap/clock.c @@ -80,6 +80,9 @@ int clk_enable(struct clk *clk) { unsigned long flags; + if (!clk) + return 0; + spin_lock_irqsave(&clk_lock, flags); __clk_enable(clk); spin_unlock_irqrestore(&clk_lock, flags); @@ -106,6 +109,9 @@ void clk_disable(struct clk *clk) { unsigned long flags; + if (IS_ERR_OR_NULL(clk)) + return; + spin_lock_irqsave(&clk_lock, flags); __clk_disable(clk); spin_unlock_irqrestore(&clk_lock, flags); @@ -117,6 +123,9 @@ unsigned long clk_get_rate(struct clk *clk) unsigned long flags; unsigned long rate; + if (!clk) + return 0; + spin_lock_irqsave(&clk_lock, flags); rate = clk->get_rate(clk); spin_unlock_irqrestore(&clk_lock, flags); @@ -129,6 +138,9 @@ long clk_round_rate(struct clk *clk, unsigned long rate) { unsigned long flags, actual_rate; + if (!clk) + return 0; + if (!clk->set_rate) return -ENOSYS; @@ -145,6 +157,9 @@ int clk_set_rate(struct clk *clk, unsigned long rate) unsigned long flags; long ret; + if (!clk) + return 0; + if (!clk->set_rate) return -ENOSYS; @@ -161,6 +176,9 @@ int clk_set_parent(struct clk *clk, struct clk *parent) unsigned long flags; int ret; + if (!clk) + return 0; + if (!clk->set_parent) return -ENOSYS; @@ -174,7 +192,7 @@ EXPORT_SYMBOL(clk_set_parent); struct clk *clk_get_parent(struct clk *clk) { - return clk->parent; + return !clk ? NULL : clk->parent; } EXPORT_SYMBOL(clk_get_parent); |