From: Arnd Bergmann Date: Thu, 4 May 2017 20:51:57 +0000 (+0200) Subject: ARM: cns3xxx: shut up frame size warning X-Git-Tag: v3.18.52~26 X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e88dabea5f8fe4d8f7bf0686a47d8cc177941a96;p=linux ARM: cns3xxx: shut up frame size warning This shuts up a warning in the 3.18-stable series that has been fixed in newer kernels with commit 498a92d42596 ("ARM: cns3xxx: pci: avoid potential stack overflow"): arch/arm/mach-cns3xxx/pcie.c: In function 'cns3xxx_pcie_hw_init': arch/arm/mach-cns3xxx/pcie.c:313:1: error: the frame size of 1080 bytes is larger than 1024 bytes [-Werror=frame-larger-than=] The fix that went into v4.4 is known to be buggy and was later fixed again with commit 88e9da9a2a70 ("CNS3xxx: Fix PCI cns3xxx_write_config()"). While we could backport both to 3.18, they are fairly invasive and the warning is definitely harmless here as the call chain is known to not overflow the stack of the init task. This simply adds a Makefile flag to extend the limit for this one file. Signed-off-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- diff --git a/arch/arm/mach-cns3xxx/Makefile b/arch/arm/mach-cns3xxx/Makefile index a1ff108486989..fd610561616ec 100644 --- a/arch/arm/mach-cns3xxx/Makefile +++ b/arch/arm/mach-cns3xxx/Makefile @@ -2,4 +2,5 @@ obj-$(CONFIG_ARCH_CNS3XXX) += cns3xxx.o cns3xxx-y += core.o pm.o cns3xxx-$(CONFIG_ATAGS) += devices.o cns3xxx-$(CONFIG_PCI) += pcie.o +CFLAGS_pcie.o += -Wframe-larger-than=1536 # override default 1024, this is safe here cns3xxx-$(CONFIG_MACH_CNS3420VB) += cns3420vb.o