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authorJonas Gorski <jonas.gorski@gmail.com>2022-02-16 10:46:34 -0800
committerJakub Kicinski <kuba@kernel.org>2022-02-17 08:45:34 -0800
commit6aba04ee3263669b335458c4cf4c7d97d6940229 (patch)
treeb2bfec2442a60fcff8e458d3cf46d0bc216ae49a
parent35a79e64de29e8d57a5989aac57611c0cd29e13e (diff)
downloadlwn-6aba04ee3263669b335458c4cf4c7d97d6940229.tar.gz
lwn-6aba04ee3263669b335458c4cf4c7d97d6940229.zip
Revert "net: ethernet: bgmac: Use devm_platform_ioremap_resource_byname"
This reverts commit 3710e80952cf2dc48257ac9f145b117b5f74e0a5. Since idm_base and nicpm_base are still optional resources not present on all platforms, this breaks the driver for everything except Northstar 2 (which has both). The same change was already reverted once with 755f5738ff98 ("net: broadcom: fix a mistake about ioremap resource"). So let's do it again. Fixes: 3710e80952cf ("net: ethernet: bgmac: Use devm_platform_ioremap_resource_byname") Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> [florian: Added comments to explain the resources are optional] Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20220216184634.2032460-1-f.fainelli@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-rw-r--r--drivers/net/ethernet/broadcom/bgmac-platform.c23
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/net/ethernet/broadcom/bgmac-platform.c b/drivers/net/ethernet/broadcom/bgmac-platform.c
index c6412c523637..b4381cd41979 100644
--- a/drivers/net/ethernet/broadcom/bgmac-platform.c
+++ b/drivers/net/ethernet/broadcom/bgmac-platform.c
@@ -172,6 +172,7 @@ static int bgmac_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct bgmac *bgmac;
+ struct resource *regs;
int ret;
bgmac = bgmac_alloc(&pdev->dev);
@@ -208,15 +209,23 @@ static int bgmac_probe(struct platform_device *pdev)
if (IS_ERR(bgmac->plat.base))
return PTR_ERR(bgmac->plat.base);
- bgmac->plat.idm_base = devm_platform_ioremap_resource_byname(pdev, "idm_base");
- if (IS_ERR(bgmac->plat.idm_base))
- return PTR_ERR(bgmac->plat.idm_base);
- else
+ /* The idm_base resource is optional for some platforms */
+ regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "idm_base");
+ if (regs) {
+ bgmac->plat.idm_base = devm_ioremap_resource(&pdev->dev, regs);
+ if (IS_ERR(bgmac->plat.idm_base))
+ return PTR_ERR(bgmac->plat.idm_base);
bgmac->feature_flags &= ~BGMAC_FEAT_IDM_MASK;
+ }
- bgmac->plat.nicpm_base = devm_platform_ioremap_resource_byname(pdev, "nicpm_base");
- if (IS_ERR(bgmac->plat.nicpm_base))
- return PTR_ERR(bgmac->plat.nicpm_base);
+ /* The nicpm_base resource is optional for some platforms */
+ regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nicpm_base");
+ if (regs) {
+ bgmac->plat.nicpm_base = devm_ioremap_resource(&pdev->dev,
+ regs);
+ if (IS_ERR(bgmac->plat.nicpm_base))
+ return PTR_ERR(bgmac->plat.nicpm_base);
+ }
bgmac->read = platform_bgmac_read;
bgmac->write = platform_bgmac_write;