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| author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2018-03-08 09:37:56 -0800 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2018-05-16 09:21:48 +0100 |
| commit | 5112cab38c76c28f973def1a9c8b881f2dc81a48 (patch) | |
| tree | 14614d5732dc5bb98972a859afd30823e88ae695 | |
| parent | 44564bc3d999cb1febfdb6750e2059d2b308ce00 (diff) | |
| download | blackbird-obmc-linux-5112cab38c76c28f973def1a9c8b881f2dc81a48.tar.gz blackbird-obmc-linux-5112cab38c76c28f973def1a9c8b881f2dc81a48.zip | |
mfd: rave-sp: Check received frame length before accepting next byte
Check received frame length _before_ accepting next byte in order to
avoid incorrectly rejecting payloads that are RAVE_SP_RX_BUFFER_SIZE
long.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
| -rw-r--r-- | drivers/mfd/rave-sp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mfd/rave-sp.c b/drivers/mfd/rave-sp.c index b70416050a81..cb0cc9d509a0 100644 --- a/drivers/mfd/rave-sp.c +++ b/drivers/mfd/rave-sp.c @@ -546,8 +546,6 @@ static int rave_sp_receive_buf(struct serdev_device *serdev, /* FALLTHROUGH */ case RAVE_SP_EXPECT_ESCAPED_DATA: - deframer->data[deframer->length++] = byte; - if (deframer->length == sizeof(deframer->data)) { dev_warn(dev, "Bad frame: Too long\n"); /* @@ -562,6 +560,8 @@ static int rave_sp_receive_buf(struct serdev_device *serdev, goto reset_framer; } + deframer->data[deframer->length++] = byte; + /* * We've extracted out special byte, now we * can go back to regular data collecting |
