diff options
| author | Stefan Wahren <stefan.wahren@i2se.com> | 2017-02-16 21:20:45 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-11-10 07:42:45 -0800 |
| commit | 08ae439c95d164e9c0022e0511f4fbb4deffd220 (patch) | |
| tree | a06917c351c660b227058216ab3e49be73ee0c7e /drivers/video | |
| parent | 9e431e0ca94716a5470f81da2e9cc9aeed3a2d09 (diff) | |
i2c: bcm2835: Avoid possible NULL ptr dereference
[ Upstream commit ababb08938df7ac245d30a58b95b94ecf8dc04fc ]
Since commit e2474541032d ("bcm2835: Fix hang for writing messages
larger than 16 bytes") the interrupt handler is prone to a possible
NULL pointer dereference. This could happen if an interrupt fires
before curr_msg is set by bcm2835_i2c_xfer_msg() and randomly occurs
on the RPi 3. Even this is an unexpected behavior the driver must
handle that with an error instead of a crash.
Reported-by: Peter Robinson <pbrobinson@gmail.com>
Fixes: e2474541032d ("bcm2835: Fix hang for writing messages larger than 16 bytes")
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/video')
0 files changed, 0 insertions, 0 deletions