mirror of https://gitee.com/openkylin/linux.git
b987b66ac3
It seems that the right variable to use in this case is *i*, instead of
*n*, otherwise there is an undefined behavior when right shifiting by more
than 31 bits when multiplying n by 8; notice that *n* can take values
equal or greater than 4 (4, 8, 16, ...).
Also, notice that under the current conditions (bl = 3), we are skiping
the handling of bytes 3, 7, 31... So, fix this by updating this logic
and limit *bl* up to 4 instead of up to 3.
This fix is based on function udc_stuff_fifo().
Addresses-Coverity-ID: 1454834 ("Bad bit shift operation")
Fixes:
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|---|---|---|
| .. | ||
| function | ||
| legacy | ||
| udc | ||
| Kconfig | ||
| Makefile | ||
| composite.c | ||
| config.c | ||
| configfs.c | ||
| configfs.h | ||
| epautoconf.c | ||
| functions.c | ||
| u_f.c | ||
| u_f.h | ||
| u_os_desc.h | ||
| usbstring.c | ||