diff mbox series

[PULL,01/12] hw/block: m25p80: Don't write to flash if write is disabled

Message ID 20210117215403.2277103-2-alistair.francis@wdc.com
State New
Headers show
Series [PULL,01/12] hw/block: m25p80: Don't write to flash if write is disabled | expand

Commit Message

Alistair Francis Jan. 17, 2021, 9:53 p.m. UTC 
From: Bin Meng <bin.meng@windriver.com>

When write is disabled, the write to flash should be avoided
in flash_write8().

Fixes: 82a2499011a7 ("m25p80: Initial implementation of SPI flash device")
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Message-id: 1608688825-81519-1-git-send-email-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 hw/block/m25p80.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 1b3f2405a1..63278cbda5 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -601,6 +601,7 @@  void flash_write8(Flash *s, uint32_t addr, uint8_t data)
 
     if (!s->write_enable) {
         qemu_log_mask(LOG_GUEST_ERROR, "M25P80: write with write protect!\n");
+        return;
     }
 
     if ((prev ^ data) & data) {