> From: [email protected] [mailto:[email protected]] > On Behalf Of Alexey Khoroshilov > Sent: Friday, December 20, 2013 2:25 PM > To: Kirsher, Jeffrey T > Cc: Alexey Khoroshilov; Brandeburg, Jesse; Allan, Bruce W; Wyborny, > Carolyn; Skidmore, Donald C; Rose, Gregory V; Duyck, Alexander H; Ronciak, > John; [email protected]; [email protected]; linux- > [email protected]; [email protected] > Subject: [PATCH] e1000: avoid potential deadlock in > e1000_do_[read|write]_eeprom() > > If eeprom->word_size is zero, e1000_do_[read|write]_eeprom() invoke > e1000_init_eeprom_params() to reinit eeprom params. > That is not a good idea since e1000_init_eeprom_params() calls > e1000_read_eeprom() if eeprom->type is e1000_eeprom_spi. > That means a deadlock on e1000_eeprom_lock. > > At the same time it is unclear if the reinit is needed at all. > e1000_init_eeprom_params() is called from probe, so it should succeed > before any activities of the module start. > > The patch suggests to remove the try to reinit eeprom params. > > Found by Linux Driver Verification project (linuxtesting.org). > > Signed-off-by: Alexey Khoroshilov <[email protected]>
Signed-off-by: Aaron Brown <[email protected]> Tested by: Aaron Brown <[email protected]> > --- > drivers/net/ethernet/intel/e1000/e1000_hw.c | 8 -------- > 1 file changed, 8 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
