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| author | Tilman Schmidt <tilman@imap.cc> | 2010-02-22 13:09:22 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-26 01:24:23 -0800 |
| commit | 63e055d1c6e3a5f6d370cc841d621d5fa4d5d834 (patch) | |
| tree | 80f645c85bbc012d3b1b45ab66ee7dd8938de49b /drivers/isdn/gigaset/asyncdata.c | |
| parent | 2ac2ed5f2dfc97ae9ed9f446ad6e064fa821ef6d (diff) | |
| download | kernel_samsung_smdk4412-63e055d1c6e3a5f6d370cc841d621d5fa4d5d834.zip kernel_samsung_smdk4412-63e055d1c6e3a5f6d370cc841d621d5fa4d5d834.tar.gz kernel_samsung_smdk4412-63e055d1c6e3a5f6d370cc841d621d5fa4d5d834.tar.bz2 | |
bas_gigaset: collapse CR/LF at end of AT response
Copy the mechanism from ser_/usb_gigaset to avoid producing
spurious empty responses for CR/LF sequences from the device.
Add a comment in all drivers documenting that behaviour.
Correct an off by one error that might result in a one byte
buffer overflow when receiving an unexpectedly long reply.
Impact: minor bugfix
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn/gigaset/asyncdata.c')
| -rw-r--r-- | drivers/isdn/gigaset/asyncdata.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/isdn/gigaset/asyncdata.c b/drivers/isdn/gigaset/asyncdata.c index ccb2a7b..e913beb 100644 --- a/drivers/isdn/gigaset/asyncdata.c +++ b/drivers/isdn/gigaset/asyncdata.c @@ -40,6 +40,8 @@ static inline int muststuff(unsigned char c) * Append received bytes to the command response buffer and forward them * line by line to the response handler. Exit whenever a mode/state change * might have occurred. + * Note: Received lines may be terminated by CR, LF, or CR LF, which will be + * removed before passing the line to the response handler. * Return value: * number of processed bytes */ |