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author | Chris Bagwell <chris@cnpbagwell.com> | 2013-01-23 19:37:34 -0800 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2013-01-23 19:38:52 -0800 |
commit | 9937c026820baabd1e908a9c1e6bdc846293000a (patch) | |
tree | 461b2c70b16edf74c7d5444951133c534a007c93 /drivers/input/tablet/wacom_wac.c | |
parent | b666263b71cb1f3b96fb79e69de7f119062b0da2 (diff) | |
download | blackbird-op-linux-9937c026820baabd1e908a9c1e6bdc846293000a.tar.gz blackbird-op-linux-9937c026820baabd1e908a9c1e6bdc846293000a.zip |
Input: wacom - fix wacom_set_report retry logic
Logic sets a value and then reads it back to make sure it worked
and retries write on failures. Since read and write share a buffer,
it needs to be set back up before writing though.
Issue is not seen a lot because 1) it doesn't need to retry for
a lot of tablets and 2) a lot of failures that need a retry are
from an -ETIMEDOUT and hopefully buffer is not touched in this case.
At least one user has shown logs with buffer being modified during
-ETIMEDOUT case with linux 3.7 kernel.
Signed-off-by: Chris Bagwell <chris@cnpbagwell.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/tablet/wacom_wac.c')
0 files changed, 0 insertions, 0 deletions