speakup: Add spinlock in synth_direct_store

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All operations with synth buffer should be protected,
as there are global pointers, which should be modified atomically.

Found by Linux Driver Verification project (linuxtesting.org)

Signed-off-by: Pavel Andrianov <andrianov@ispras.ru>
Acked-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Pavel Andrianov 2016-09-05 16:17:47 +03:00 • committed by Greg Kroah-Hartman

parent da25a8ec6b

commit 777953182e

1 changed files with 3 additions and 0 deletions

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drivers/staging/speakup/kobjects.c

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