* [PATCH AUTOSEL 6.10 068/121] pinctrl: renesas: rzg2l: Validate power registers for SD and ETH
[not found] <20240801000834.3930818-1-sashal@kernel.org>
@ 2024-08-01 0:00 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2024-08-01 0:00 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Lad Prabhakar, Geert Uytterhoeven, Claudiu Beznea, Sasha Levin,
linus.walleij, linux-renesas-soc, linux-gpio
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
[ Upstream commit a3a632ed87f0913779092c30bd0ea7dfd81601f3 ]
On RZ/V2H(P) SoC, the power registers for SD and ETH do not exist,
resulting in invalid register offsets. Ensure that the register offsets
are valid before any read/write operations are performed. If the power
registers are not available, both SD and ETH will be set to '0'.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> # on RZ/G3S
Link: https://lore.kernel.org/r/20240530173857.164073-7-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pinctrl/renesas/pinctrl-rzg2l.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 60be78da9f529..389602e4d7ab3 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -2583,8 +2583,10 @@ static int rzg2l_pinctrl_suspend_noirq(struct device *dev)
rzg2l_pinctrl_pm_setup_dedicated_regs(pctrl, true);
for (u8 i = 0; i < 2; i++) {
- cache->sd_ch[i] = readb(pctrl->base + SD_CH(regs->sd_ch, i));
- cache->eth_poc[i] = readb(pctrl->base + ETH_POC(regs->eth_poc, i));
+ if (regs->sd_ch)
+ cache->sd_ch[i] = readb(pctrl->base + SD_CH(regs->sd_ch, i));
+ if (regs->eth_poc)
+ cache->eth_poc[i] = readb(pctrl->base + ETH_POC(regs->eth_poc, i));
}
cache->qspi = readb(pctrl->base + QSPI);
@@ -2615,8 +2617,10 @@ static int rzg2l_pinctrl_resume_noirq(struct device *dev)
writeb(cache->qspi, pctrl->base + QSPI);
writeb(cache->eth_mode, pctrl->base + ETH_MODE);
for (u8 i = 0; i < 2; i++) {
- writeb(cache->sd_ch[i], pctrl->base + SD_CH(regs->sd_ch, i));
- writeb(cache->eth_poc[i], pctrl->base + ETH_POC(regs->eth_poc, i));
+ if (regs->sd_ch)
+ writeb(cache->sd_ch[i], pctrl->base + SD_CH(regs->sd_ch, i));
+ if (regs->eth_poc)
+ writeb(cache->eth_poc[i], pctrl->base + ETH_POC(regs->eth_poc, i));
}
rzg2l_pinctrl_pm_setup_pfc(pctrl);
--
2.43.0
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