From: Simon Horman horms+renesas@verge.net.au
[ Upstream commit 542cdf4068049458e1411b120bd5a4bbe3ddc49a ]
Ensure that the base address used by a call to rcar_thermal_common_write() may be NULL if the SOC supports interrupts for use with the thermal device but none are defined in DT as is the case for R-Car H1 (r8a7779). Guard against this condition to prevent a NULL dereference when the device is probed.
Tested on: * R-Mobile APE6 (r8a73a4) / APE6EVM * R-Car H1 (r8a7779) / Marzen * R-Car H2 (r8a7790) / Lager * R-Car M2-W (r8a7791) / Koelsch * R-Car M2-N (r8a7793) / Gose * R-Car D3 ES1.0 (r8a77995) / Draak
Fixes: 1969d9dc2079 ("thermal: rcar_thermal: add r8a77995 support") Signed-off-by: Simon Horman horms+renesas@verge.net.au Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Signed-off-by: Eduardo Valentin edubezval@gmail.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/thermal/rcar_thermal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index 45fb284d4c11..e77e63070e99 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -598,7 +598,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) enr_bits |= 3 << (i * 8); }
- if (enr_bits) + if (common->base && enr_bits) rcar_thermal_common_write(common, ENR, enr_bits);
dev_info(dev, "%d sensor probed\n", i);