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 <[email protected]>
Signed-off-by: Lee Jones <[email protected]>

diff --git a/drivers/mfd/lpc_ich.c b/drivers/mfd/lpc_ich.c
index cf1120abbf521f4c819ff2ab0318cdfaf86515e9..53dc1a43472ce0586d683e0e1dbf5ce3fdfb97e7 100644 (file)
--- 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);
                }