diff options
| author | Pavel Skripkin <paskripkin@gmail.com> | 2022-06-07 22:26:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-10 09:11:14 +0200 |
| commit | fed9e604eeb6150847d9757f6b056c12912d468b (patch) | |
| tree | 5a14443dfb27103f4e0623eac8e1519d087c0a2b /drivers/staging/r8188eu/include/rtw_io.h | |
| parent | 857fe9e5efc09833fe1110e99d8baba954a86abb (diff) | |
| download | linux-fed9e604eeb6150847d9757f6b056c12912d468b.tar.bz2 | |
staging: r8188eu: add error handling of rtw_read16
rtw_read16() reads data from device via USB API which may fail. In case
of any failure previous code returned stack data to callers, which is
wrong.
Fix it by changing rtw_read16() prototype and prevent caller from
touching random stack data
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/06b45afda048d0aeddeed983c2318680fe6265f5.1654629778.git.paskripkin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/r8188eu/include/rtw_io.h')
| -rw-r--r-- | drivers/staging/r8188eu/include/rtw_io.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/r8188eu/include/rtw_io.h b/drivers/staging/r8188eu/include/rtw_io.h index c03646e9658d..d9db2c1c7a67 100644 --- a/drivers/staging/r8188eu/include/rtw_io.h +++ b/drivers/staging/r8188eu/include/rtw_io.h @@ -221,7 +221,7 @@ void _rtw_attrib_read(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem); void _rtw_attrib_write(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem); int __must_check rtw_read8(struct adapter *adapter, u32 addr, u8 *data); -u16 rtw_read16(struct adapter *adapter, u32 addr); +int __must_check rtw_read16(struct adapter *adapter, u32 addr, u16 *data); u32 rtw_read32(struct adapter *adapter, u32 addr); void _rtw_read_mem(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem); u32 rtw_read_port(struct adapter *adapter, u8 *pmem); |