From: Takahiro Kuwano Takahiro.Kuwano@infineon.com
commit 58fa22f68fcaff20ce4d08a6adffa64f65ccd37d upstream.
Even if erase type is same as previous region, erase size can be different if the previous region is overlaid region. Since 'region->size' is assigned to 'cmd->size' for overlaid region, comparing 'erase->size' and 'cmd->size' can detect previous overlaid region.
Fixes: 5390a8df769e ("mtd: spi-nor: add support to non-uniform SFDP SPI NOR flash memories") Cc: stable@vger.kernel.org Signed-off-by: Takahiro Kuwano Takahiro.Kuwano@infineon.com [ta: Add Fixes tag and Cc to stable] Signed-off-by: Tudor Ambarus tudor.ambarus@microchip.com Link: https://lore.kernel.org/r/13d47e8d8991b8a7fd8cc7b9e2a5319c56df35cc.160161287... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mtd/spi-nor/core.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -1364,6 +1364,7 @@ static int spi_nor_init_erase_cmd_list(s goto destroy_erase_cmd_list;
if (prev_erase != erase || + erase->size != cmd->size || region->offset & SNOR_OVERLAID_REGION) { cmd = spi_nor_init_erase_cmd(region, erase); if (IS_ERR(cmd)) {