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From: Linus Walleij <>
To: Luis Chamberlain <>,
	Greg Kroah-Hartman <>
	Linus Walleij <>,
	Stephan Gerhold <>
Subject: [PATCH] firmware_loader: Fix labels with comma for builtin firmware
Date: Fri, 15 Nov 2019 23:59:11 +0100
Message-ID: <> (raw)

Some firmware images contain a comma, such as:
EXTRA_FIRMWARE "brcm/,gt-s7710.txt"
as Broadcom firmware simply tags the device tree compatible
string at the end of the firmware parameter file. And the
compatible string contains a comma.

This doesn't play well with gas:

drivers/base/firmware_loader/builtin/brcm/,gt-s7710.txt.gen.S: Assembler messages:
drivers/base/firmware_loader/builtin/brcm/,gt-s7710.txt.gen.S:4: Error: bad instruction `_fw_brcm_brcmfmac4334_sdio_samsung,gt_s7710_txt_bin:'
drivers/base/firmware_loader/builtin/brcm/,gt-s7710.txt.gen.S:9: Error: bad instruction `_fw_brcm_brcmfmac4334_sdio_samsung,gt_s7710_txt_name:'
drivers/base/firmware_loader/builtin/brcm/,gt-s7710.txt.gen.S:15: Error: can't resolve `.rodata' {.rodata section} - `_fw_brcm_brcmfmac4334_sdio_samsung' {*UND* section}
make[6]: *** [../scripts/ drivers/base/firmware_loader/builtin/brcm/,gt-s7710.txt.gen.o] Error 1

We need to get rid of the comma from the labels used by the
assembly stub generator.

Replacing a comma using GNU Make subst requires a helper

Cc: Stephan Gerhold <>
Signed-off-by: Linus Walleij <>
 drivers/base/firmware_loader/builtin/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/base/firmware_loader/builtin/Makefile b/drivers/base/firmware_loader/builtin/Makefile
index 37e5ae387400..4a66888e7253 100644
--- a/drivers/base/firmware_loader/builtin/Makefile
+++ b/drivers/base/firmware_loader/builtin/Makefile
@@ -8,7 +8,8 @@ fwdir := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir))
 obj-y  := $(addsuffix .gen.o, $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE)))
 FWNAME    = $(patsubst $(obj)/%.gen.S,%,$@)
-FWSTR     = $(subst /,_,$(subst .,_,$(subst -,_,$(FWNAME))))
+comma     := ,
+FWSTR     = $(subst $(comma),_,$(subst /,_,$(subst .,_,$(subst -,_,$(FWNAME)))))
 ASM_WORD  = $(if $(CONFIG_64BIT),.quad,.long)
 ASM_ALIGN = $(if $(CONFIG_64BIT),3,2)
 PROGBITS  = $(if $(CONFIG_ARM),%,@)progbits

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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-15 22:59 Linus Walleij [this message]
2019-11-18 20:16 ` Luis Chamberlain

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