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If spin_lock_irqsave is called twice in a row with the same second argument, the interrupt state at the point of the second call overwrites the value saved by the first call. Indeed, the second call does not need to save the interrupt state, so it is changed to a simple spin_lock. The semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression lock1,lock2; expression flags; @@ *spin_lock_irqsave(lock1,flags) ... when != flags *spin_lock_irqsave(lock2,flags) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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| .. | ||
| gus_dma.c | ||
| gus_dram.c | ||
| gus_instr.c | ||
| gus_io.c | ||
| gus_irq.c | ||
| gus_main.c | ||
| gus_mem_proc.c | ||
| gus_mem.c | ||
| gus_mixer.c | ||
| gus_pcm.c | ||
| gus_reset.c | ||
| gus_tables.h | ||
| gus_timer.c | ||
| gus_uart.c | ||
| gus_volume.c | ||
| gusclassic.c | ||
| gusextreme.c | ||
| gusmax.c | ||
| interwave-stb.c | ||
| interwave.c | ||
| Makefile | ||