59d4467be4
w1 devices need a mutex to serial IO. Most use master->mutex. However that is used for other purposes and they can conflict. In particular master->mutex is held while w1_attach_slave_device is called. For bq27000, this registers a 'powersupply' device which tries to read the current status. The attempt to read will cause a deadlock on master->mutex. So create a new per-slave mutex and use that for serializing IO for bq27000. Signed-off-by: NeilBrown <neilb@suse.de> Cc: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| w1_bq27000.c | ||
| w1_ds2408.c | ||
| w1_ds2423.c | ||
| w1_ds2431.c | ||
| w1_ds2433.c | ||
| w1_ds2760.c | ||
| w1_ds2760.h | ||
| w1_ds2780.c | ||
| w1_ds2780.h | ||
| w1_ds2781.c | ||
| w1_ds2781.h | ||
| w1_smem.c | ||
| w1_therm.c | ||