Commit 58fa22f6 authored by Takahiro Kuwano's avatar Takahiro Kuwano Committed by Tudor Ambarus
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mtd: spi-nor: core: Add erase size check for erase command initialization 



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: 5390a8df ("mtd: spi-nor: add support to non-uniform SFDP SPI NOR flash memories")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarTakahiro Kuwano <Takahiro.Kuwano@infineon.com>
[ta: Add Fixes tag and Cc to stable]
Signed-off-by: default avatarTudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/13d47e8d8991b8a7fd8cc7b9e2a5319c56df35cc.1601612872.git.Takahiro.Kuwano@infineon.com
parent 969b2767

drivers/mtd/spi-nor/core.c

+1 −0
Original line number Diff line number Diff line
@@ -1516,6 +1516,7 @@ static int spi_nor_init_erase_cmd_list(struct spi_nor *nor, 
			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)) {