linux-kernel - [PATCH 1/2] gpio: amd8111: Convert PCIBIOS

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Date: Mon, 27 May 2024 16:23:44 +0300
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Dmitry Baryshkov <dbaryshkov@...il.com>,
	linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	stable@...r.kernel.org
Subject: [PATCH 1/2] gpio: amd8111: Convert PCIBIOS_* return codes to errnos

amd_gpio_init() uses pci_read_config_dword() that returns PCIBIOS_*
codes. The return code is then returned as is but amd_gpio_init() is
a module init function that should return normal errnos.

Convert PCIBIOS_* returns code using pcibios_err_to_errno() into normal
errno before returning it from amd_gpio_init().

Fixes: f942a7de047d ("gpio: add a driver for GPIO pins found on AMD-8111 south bridge chips")
Cc: stable@...r.kernel.org
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
 drivers/gpio/gpio-amd8111.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-amd8111.c b/drivers/gpio/gpio-amd8111.c
index 6f3ded619c8b..3377667a28de 100644
--- a/drivers/gpio/gpio-amd8111.c
+++ b/drivers/gpio/gpio-amd8111.c
@@ -195,8 +195,10 @@ static int __init amd_gpio_init(void)
 
 found:
 	err = pci_read_config_dword(pdev, 0x58, &gp.pmbase);
-	if (err)
+	if (err) {
+		err = pcibios_err_to_errno(err);
 		goto out;
+	}
 	err = -EIO;
 	gp.pmbase &= 0x0000FF00;
 	if (gp.pmbase == 0)
-- 
2.39.2