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spi/bitbang: (cosmetic) simplify list manipulation

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Use a proper list iterator instead of an open-coded loop and remove a
superfluous list head initialisation.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Guennadi Liakhovetski 2012-05-21 13:25:17 +02:00 committed by Grant Likely
parent b82b576bc7
commit edba9bf99d
1 changed files with 3 additions and 5 deletions
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8
drivers/spi/spi-bitbang.c
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@ -260,11 +260,11 @@ static void bitbang_work(struct work_struct *work)
struct spi_bitbang *bitbang =
container_of(work, struct spi_bitbang, work);
unsigned long flags;
struct spi_message *m, *_m;
spin_lock_irqsave(&bitbang->lock, flags);
bitbang->busy = 1;
while (!list_empty(&bitbang->queue)) {
struct spi_message *m;
list_for_each_entry_safe(m, _m, &bitbang->queue, queue) {
struct spi_device *spi;
unsigned nsecs;
struct spi_transfer *t = NULL;
@ -273,9 +273,7 @@ static void bitbang_work(struct work_struct *work)
int status;
int do_setup = -1;
m = container_of(bitbang->queue.next, struct spi_message,
queue);
list_del_init(&m->queue);
list_del(&m->queue);
spin_unlock_irqrestore(&bitbang->lock, flags);
/* FIXME this is made-up ... the correct value is known to