On Wed, 18 Dec 2019 13:25:42 +0100, Jia-Ju Bai wrote: > > The driver may sleep while holding a read lock. > The function call path (from bottom to top) in Linux 4.19 is: > > sound/pci/ice1712/quartet.c, 414: > mutex_lock in reg_write > sound/pci/ice1712/quartet.c, 485: > reg_write in set_cpld > sound/pci/ice1712/quartet.c, 876: > set_cpld in qtet_set_rate > sound/pci/ice1712/ice1724.c, 687: > (FUNC_PTR) qtet_set_rate in snd_vt1724_set_pro_rate > sound/pci/ice1712/ice1724.c, 668: > _raw_spin_lock_irqsave in snd_vt1724_set_pro_rate > > (FUNC_PTR) means a function pointer is called. > mutex_lock() can sleep at runtime. > > I am not sure how to properly fix this possible bug, so I only report it. > > This bug is found by a static analysis tool STCheck written by myself. Thanks for the report. I'll submitted the fix. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
