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Subject[BUG] memstick: rtsx_usb_ms: possible uninitialized-variable access in rtsx_usb_ms_issue_cmd()
Date
Hello,

Our static analysis tool finds a possible uninitialized-variable access
in the memstick driver in Linux 5.14.0-rc3:

At the beginning of the function rtsx_usb_ms_issue_cmd(), the variable
int_reg is not initialized.
If the following condition is true, it remains uninitialized.
469:    if (req->long_data)

However, it is accessed in some statements such as:
491:    if (int_reg & MS_INT_CMDNK)

I am not quite sure whether this possible uninitialized-variable access
is real and how to fix it if it is real.
Any feedback would be appreciated, thanks!

Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>

Best wishes,
Tuo Li

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