From: Mika Westerberg Date: Thu, 4 Jan 2018 09:20:18 +0000 (+0300) Subject: mfd: lpc_ich: Do not touch SPI-NOR write protection bit on Apollo Lake X-Git-Tag: v4.19~1772^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0f89ffefa4e122e7e9bc1c2d716c6052b4601b76;p=platform%2Fkernel%2Flinux-rpi.git 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: Mika Westerberg Signed-off-by: Lee Jones --- diff --git a/drivers/mfd/lpc_ich.c b/drivers/mfd/lpc_ich.c index cf1120abbf52..53dc1a43472c 100644 --- a/drivers/mfd/lpc_ich.c +++ b/drivers/mfd/lpc_ich.c @@ -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); }