diff mbox series

[3/3] power: reset: nvmem-reboot-mode: fix write for small cells

Message ID 20241017160904.2803663-3-jberring@redhat.com
State New
Headers show
Series [1/3] nvmem: core: improve range check for nvmem_cell_write() | expand

Commit Message

Jennifer Berringer Oct. 17, 2024, 4:09 p.m. UTC 
Some devices, such as Qualcomm sa8775p, have an nvmem reboot mode cell
that is smaller than 32 bits, which resulted in
nvmem_reboot_mode_write() failing. Using nvmem_cell_write_variable_u32()
fixes this by writing only the least-significant byte of the magic value
when the size specified in device tree is only one byte.

Signed-off-by: Jennifer Berringer <jberring@redhat.com>
---
 drivers/power/reset/nvmem-reboot-mode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/power/reset/nvmem-reboot-mode.c b/drivers/power/reset/nvmem-reboot-mode.c
index 41530b70cfc4..b52eb879d1c1 100644
--- a/drivers/power/reset/nvmem-reboot-mode.c
+++ b/drivers/power/reset/nvmem-reboot-mode.c
@@ -24,7 +24,7 @@  static int nvmem_reboot_mode_write(struct reboot_mode_driver *reboot,
 
 	nvmem_rbm = container_of(reboot, struct nvmem_reboot_mode, reboot);
 
-	ret = nvmem_cell_write(nvmem_rbm->cell, &magic, sizeof(magic));
+	ret = nvmem_cell_write_variable_u32(nvmem_rbm->cell, magic);
 	if (ret < 0)
 		dev_err(reboot->dev, "update reboot mode bits failed\n");