This is a note to let you know that I've just added the patch titled m68knommu: include SDHC support only when hardware has it to the 5.8-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: m68knommu-include-sdhc-support-only-when-hardware-ha.patch and it can be found in the queue-5.8 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 42a252861e95abc3cd4cc288f85a2b825862b722 Author: Greg Ungerer <gerg@xxxxxxxxxxxxxx> Date: Mon Sep 21 12:55:20 2020 +1000 m68knommu: include SDHC support only when hardware has it [ Upstream commit 322c512f476f07e960cecd447ef22c15bed0e5f1 ] The mere fact that the kernel has the MMC subsystem enabled (CONFIG_MMC enabled) does not mean that the underlying hardware platform has the SDHC hardware present. Within the ColdFire hardware defines that is signified by MCFSDHC_BASE being defined with an address. The platform data for the ColdFire parts is including the SDHC hardware if CONFIG_MMC is enabled, instead of MCFSDHC_BASE. This means that if you are compiling for a ColdFire target that does not support SDHC but enable CONFIG_MMC you will fail to compile with errors like this: arch/m68k/coldfire/device.c:565:12: error: â??MCFSDHC_BASEâ?? undeclared here (not in a function) .start = MCFSDHC_BASE, ^ arch/m68k/coldfire/device.c:566:25: error: â??MCFSDHC_SIZEâ?? undeclared here (not in a function) .end = MCFSDHC_BASE + MCFSDHC_SIZE - 1, ^ arch/m68k/coldfire/device.c:569:12: error: â??MCF_IRQ_SDHCâ?? undeclared here (not in a function) .start = MCF_IRQ_SDHC, ^ Make the SDHC platform support depend on MCFSDHC_BASE, that is only include it if the specific ColdFire SoC has that hardware module. Fixes: 991f5c4dd2422881 ("m68k: mcf5441x: add support for esdhc mmc controller") Signed-off-by: Greg Ungerer <gerg@xxxxxxxxxxxxxx> Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Reviewed-by: Angelo Dureghello <angelo.dureghello@xxxxxxxxxxx> Tested-by: Angelo Dureghello <angelo.dureghello@xxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/m68k/coldfire/device.c b/arch/m68k/coldfire/device.c index 9ef4ec0aea008..59f7dfe50a4d0 100644 --- a/arch/m68k/coldfire/device.c +++ b/arch/m68k/coldfire/device.c @@ -554,7 +554,7 @@ static struct platform_device mcf_edma = { }; #endif /* IS_ENABLED(CONFIG_MCF_EDMA) */ -#if IS_ENABLED(CONFIG_MMC) +#ifdef MCFSDHC_BASE static struct mcf_esdhc_platform_data mcf_esdhc_data = { .max_bus_width = 4, .cd_type = ESDHC_CD_NONE, @@ -579,7 +579,7 @@ static struct platform_device mcf_esdhc = { .resource = mcf_esdhc_resources, .dev.platform_data = &mcf_esdhc_data, }; -#endif /* IS_ENABLED(CONFIG_MMC) */ +#endif /* MCFSDHC_BASE */ static struct platform_device *mcf_devices[] __initdata = { &mcf_uart, @@ -613,7 +613,7 @@ static struct platform_device *mcf_devices[] __initdata = { #if IS_ENABLED(CONFIG_MCF_EDMA) &mcf_edma, #endif -#if IS_ENABLED(CONFIG_MMC) +#ifdef MCFSDHC_BASE &mcf_esdhc, #endif };