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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-09-12 19:14:33 +0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-09-12 19:14:33 +0400 |
| commit | 25a765b7f05cb8460fa01b54568894b20e184862 (patch) | |
| tree | 0b56db57b4d9f912393ab303c269e0fe6cdf8635 /drivers/w1/w1.c | |
| parent | 9d2be9287107695708e6aae5105a8a518a6cb4d0 (diff) | |
| parent | 64282278989d5b0398dcb3ba7904cb00c621dc35 (diff) | |
| download | linux-25a765b7f05cb8460fa01b54568894b20e184862.tar.xz | |
Merge branch 'x86/platform' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into stable/for-linus-3.7
* 'x86/platform' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (9690 commits)
x86: Document x86_init.paging.pagetable_init()
x86: xen: Cleanup and remove x86_init.paging.pagetable_setup_done()
x86: Move paging_init() call to x86_init.paging.pagetable_init()
x86: Rename pagetable_setup_start() to pagetable_init()
x86: Remove base argument from x86_init.paging.pagetable_setup_start
Linux 3.6-rc5
HID: tpkbd: work even if the new Lenovo Keyboard driver is not configured
Remove user-triggerable BUG from mpol_to_str
xen/pciback: Fix proper FLR steps.
uml: fix compile error in deliver_alarm()
dj: memory scribble in logi_dj
Fix order of arguments to compat_put_time[spec|val]
xen: Use correct masking in xen_swiotlb_alloc_coherent.
xen: fix logical error in tlb flushing
xen/p2m: Fix one-off error in checking the P2M tree directory.
powerpc: Don't use __put_user() in patch_instruction
powerpc: Make sure IPI handlers see data written by IPI senders
powerpc: Restore correct DSCR in context switch
powerpc: Fix DSCR inheritance in copy_thread()
powerpc: Keep thread.dscr and thread.dscr_inherit in sync
...
Diffstat (limited to 'drivers/w1/w1.c')
| -rw-r--r-- | drivers/w1/w1.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c index 2f2e894ea0c8..1a574370d2cd 100644 --- a/drivers/w1/w1.c +++ b/drivers/w1/w1.c @@ -557,7 +557,7 @@ static int w1_uevent(struct device *dev, struct kobj_uevent_env *env) struct w1_master *md = NULL; struct w1_slave *sl = NULL; char *event_owner, *name; - int err; + int err = 0; if (dev->driver == &w1_master_driver) { md = container_of(dev, struct w1_master, dev); @@ -576,19 +576,17 @@ static int w1_uevent(struct device *dev, struct kobj_uevent_env *env) event_owner, name, dev_name(dev)); if (dev->driver != &w1_slave_driver || !sl) - return 0; + goto end; err = add_uevent_var(env, "W1_FID=%02X", sl->reg_num.family); if (err) - return err; + goto end; err = add_uevent_var(env, "W1_SLAVE_ID=%024LX", (unsigned long long)sl->reg_num.id); - if (err) - return err; - - return 0; -}; +end: + return err; +} #else static int w1_uevent(struct device *dev, struct kobj_uevent_env *env) { @@ -887,16 +885,21 @@ void w1_search(struct w1_master *dev, u8 search_type, w1_slave_found_callback cb * * Return 0 - device(s) present, 1 - no devices present. */ + mutex_lock(&dev->bus_mutex); if (w1_reset_bus(dev)) { + mutex_unlock(&dev->bus_mutex); dev_dbg(&dev->dev, "No devices present on the wire.\n"); break; } /* Do fast search on single slave bus */ if (dev->max_slave_count == 1) { + int rv; w1_write_8(dev, W1_READ_ROM); + rv = w1_read_block(dev, (u8 *)&rn, 8); + mutex_unlock(&dev->bus_mutex); - if (w1_read_block(dev, (u8 *)&rn, 8) == 8 && rn) + if (rv == 8 && rn) cb(dev, rn); break; @@ -929,10 +932,12 @@ void w1_search(struct w1_master *dev, u8 search_type, w1_slave_found_callback cb rn |= (tmp64 << i); if (kthread_should_stop()) { + mutex_unlock(&dev->bus_mutex); dev_dbg(&dev->dev, "Abort w1_search\n"); return; } } + mutex_unlock(&dev->bus_mutex); if ( (triplet_ret & 0x03) != 0x03 ) { if ( (desc_bit == last_zero) || (last_zero < 0)) |