[PATCH] pinctrl: renesas: checker: Restrict checks to Renesas platforms

When DEBUG is defined (e.g. if CONFIG_DEBUG_PINCTRL=y), the Renesas pin
control driver runs sanity checks against the pin control tables.  This
may cause lots of output on the console, and can be annoying in ARM
multi-platform kernels.  Fix this by only running the checks when
running on SuperH, or on a DT platform supported by the Renesas pin
controller driver.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
To be queued in renesas-pinctrl-for-v5.12.

 drivers/pinctrl/renesas/core.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/pinctrl/renesas/core.c b/drivers/pinctrl/renesas/core.c
index b9f80833f532e7b7..56cb8e1d8384b39c 100644
--- a/drivers/pinctrl/renesas/core.c
+++ b/drivers/pinctrl/renesas/core.c

@@ -1146,6 +1146,11 @@ static void __init sh_pfc_check_driver(const struct platform_driver *pdrv)
 {
 	unsigned int i;
 
+#ifndef CONFIG_SUPERH
+	if (!of_find_matching_node(NULL, pdrv->driver.of_match_table))
+		return;
+#endif
+
 	sh_pfc_regs = kcalloc(SH_PFC_MAX_REGS, sizeof(*sh_pfc_regs),
 			      GFP_KERNEL);
 	if (!sh_pfc_regs)

-- 
2.25.1


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On Mon, Jan 11, 2021 at 3:06 PM Geert Uytterhoeven
[off-list ref] wrote:

When DEBUG is defined (e.g. if CONFIG_DEBUG_PINCTRL=y), the Renesas pin
control driver runs sanity checks against the pin control tables.  This
may cause lots of output on the console, and can be annoying in ARM
multi-platform kernels.  Fix this by only running the checks when
running on SuperH, or on a DT platform supported by the Renesas pin
controller driver.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Thank you for addressing it,

Reviewed-by: Arnd Bergmann <arnd@arndb.de>

I usually prefer writing this as

       if (!IS_ENABLED(CONFIG_SUPERH) &&
           !of_find_matching_node(NULL, pdrv->driver.of_match_table))

but I don't care enough to ask you to resend ;-)

       Arnd

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