Messages in this thread Patch in this message | | | Date | Fri, 28 Mar 2008 07:24:00 -0500 | From | David Fries <> | Subject | [PATCH 2/35] W1: abort search early on on exit |
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w1.c 1.5 Early abort if the master driver or the hardware goes away in the middle of a bus search operation. The alternative is to spam the print buffer up to 64*64 times with read errors in the case of USB.
Signed-off-by: David Fries <david@fries.net> --- drivers/w1/w1.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c index 2d11fe7..6fb4110 100644 --- a/drivers/w1/w1.c +++ b/drivers/w1/w1.c @@ -771,6 +771,11 @@ void w1_search(struct w1_master *dev, u8 search_type, w1_slave_found_callback cb /* extract the direction taken & update the device number */ tmp64 = (triplet_ret >> 2); rn |= (tmp64 << i); + + if(test_bit(W1_MASTER_NEED_EXIT, &dev->flags)) { + printk(KERN_INFO "Abort w1_search (exiting)\n"); + return; + } } if ( (triplet_ret & 0x03) != 0x03 ) { -- 1.4.4.4[unhandled content-type:application/pgp-signature] | |