In the Linux kernel, the following vulnerability has been resolved: mailbox: th1520: Fix a NULL vs IS_ERR() bug The devm_ioremap() function doesn't return error pointers, it returns NULL. Update the error checking to match.
https://git.kernel.org/stable/c/ecbde88e544ff016fa08bbf2156dc431bb123e9b
https://git.kernel.org/stable/c/d0f98e14c010bcf27898b635a54c1994ac4110a8