From 0f89ffefa4e122e7e9bc1c2d716c6052b4601b76 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Thu, 4 Jan 2018 12:20:18 +0300 Subject: [PATCH] mfd: lpc_ich: Do not touch SPI-NOR write protection bit on Apollo Lake Git-commit: 0f89ffefa4e122e7e9bc1c2d716c6052b4601b76 Patch-mainline: v4.16-rc1 References: FATE#326580,bsc#1051510 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 Acked-by: Takashi Iwai --- drivers/mfd/lpc_ich.c | 5 ----- 1 file changed, 5 deletions(-) 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); } -- 2.18.0