xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tty: n_gsm: fix malformed counter for out of frame data

Browse Source 
commit a24b4b2f660b7ddf3f484b37600bba382cb28a9d upstream.

The gsm_mux field 'malformed' represents the number of malformed frames
received. However, gsm1_receive() also increases this counter for any out
of frame byte.
Fix this by ignoring out of frame data for the malformed counter.

Fixes: e1eaea46bb ("tty: n_gsm line discipline")
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Starke <daniel.starke@siemens.com>
Link: https://lore.kernel.org/r/20220414094225.4527-7-daniel.starke@siemens.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Daniel Starke
2022-04-14 02:42:12 -07:00
committed by Greg Kroah-Hartman
parent d19613895e
commit 7346e54dbf
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/tty/n_gsm.c
View File

@@ -1968,6 +1968,7 @@ static void gsm1_receive(struct gsm_mux *gsm, unsigned char c)
}
/* Any partial frame was a runt so go back to start */
if (gsm->state != GSM_START) {
if (gsm->state != GSM_SEARCH)
gsm->malformed++;
gsm->state = GSM_START;
}