Commit 0f89ffef authored by Mika Westerberg's avatar Mika Westerberg Committed by Lee Jones
Browse files

mfd: lpc_ich: Do not touch SPI-NOR write protection bit on Apollo Lake 



Just to be on the safe side, don't touch the bit. If write access to the
flash chip is needed, the BIOS needs to enable it explicitly.

Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 0c384fc8

drivers/mfd/lpc_ich.c

+0 −5
Original line number Diff line number Diff line
@@ -1143,11 +1143,6 @@ static int lpc_ich_init_spi(struct pci_dev *dev) 
			res->end = res->start + SPIBASE_APL_SZ - 1;



			pci_bus_read_config_dword(bus, spi, BCR, &bcr);

			if (!(bcr & BCR_WPD)) {

				bcr |= BCR_WPD;

				pci_bus_write_config_dword(bus, spi, BCR, bcr);

				pci_bus_read_config_dword(bus, spi, BCR, &bcr);

			}

			info->writeable = !!(bcr & BCR_WPD);

		}