brcmfmac build failure with gcc < 4.3 due to __UNIQUE_ID() clash (was: Re: brcmfmac: Unify methods to define and map firmware files.)
From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: 2016-01-14 20:24:00
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Hi Hante, On Wed, Jan 13, 2016 at 5:55 AM, Linux Kernel Mailing List [off-list ref] wrote:
Commit: 46d703a775394e4724509ff55cdda41d228c028c brcmfmac: Unify methods to define and map firmware files.
quoted hunk
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c@@ -44,25 +44,29 @@ enum brcmf_pcie_state { BRCMFMAC_PCIE_STATE_UP }; - -#define BRCMF_PCIE_43602_FW_NAME "brcm/brcmfmac43602-pcie.bin" -#define BRCMF_PCIE_43602_NVRAM_NAME "brcm/brcmfmac43602-pcie.txt" -#define BRCMF_PCIE_4350_FW_NAME "brcm/brcmfmac4350-pcie.bin" -#define BRCMF_PCIE_4350_NVRAM_NAME "brcm/brcmfmac4350-pcie.txt" -#define BRCMF_PCIE_4356_FW_NAME "brcm/brcmfmac4356-pcie.bin" -#define BRCMF_PCIE_4356_NVRAM_NAME "brcm/brcmfmac4356-pcie.txt" -#define BRCMF_PCIE_43570_FW_NAME "brcm/brcmfmac43570-pcie.bin" -#define BRCMF_PCIE_43570_NVRAM_NAME "brcm/brcmfmac43570-pcie.txt" -#define BRCMF_PCIE_4358_FW_NAME "brcm/brcmfmac4358-pcie.bin" -#define BRCMF_PCIE_4358_NVRAM_NAME "brcm/brcmfmac4358-pcie.txt" -#define BRCMF_PCIE_4359_FW_NAME "brcm/brcmfmac4359-pcie.bin" -#define BRCMF_PCIE_4359_NVRAM_NAME "brcm/brcmfmac4359-pcie.txt" -#define BRCMF_PCIE_4365_FW_NAME "brcm/brcmfmac4365b-pcie.bin" -#define BRCMF_PCIE_4365_NVRAM_NAME "brcm/brcmfmac4365b-pcie.txt" -#define BRCMF_PCIE_4366_FW_NAME "brcm/brcmfmac4366b-pcie.bin" -#define BRCMF_PCIE_4366_NVRAM_NAME "brcm/brcmfmac4366b-pcie.txt" -#define BRCMF_PCIE_4371_FW_NAME "brcm/brcmfmac4371-pcie.bin" -#define BRCMF_PCIE_4371_NVRAM_NAME "brcm/brcmfmac4371-pcie.txt" +BRCMF_FW_NVRAM_DEF(43602, "brcmfmac43602-pcie.bin", "brcmfmac43602-pcie.txt"); +BRCMF_FW_NVRAM_DEF(4350, "brcmfmac4350-pcie.bin", "brcmfmac4350-pcie.txt"); +BRCMF_FW_NVRAM_DEF(4356, "brcmfmac4356-pcie.bin", "brcmfmac4356-pcie.txt"); +BRCMF_FW_NVRAM_DEF(43570, "brcmfmac43570-pcie.bin", "brcmfmac43570-pcie.txt"); +BRCMF_FW_NVRAM_DEF(4358, "brcmfmac4358-pcie.bin", "brcmfmac4358-pcie.txt"); +BRCMF_FW_NVRAM_DEF(4359, "brcmfmac4359-pcie.bin", "brcmfmac4359-pcie.txt"); +BRCMF_FW_NVRAM_DEF(4365B, "brcmfmac4365b-pcie.bin", "brcmfmac4365b-pcie.txt"); +BRCMF_FW_NVRAM_DEF(4366B, "brcmfmac4366b-pcie.bin", "brcmfmac4366b-pcie.txt"); +BRCMF_FW_NVRAM_DEF(4371, "brcmfmac4371-pcie.bin", "brcmfmac4371-pcie.txt"); + +static struct brcmf_firmware_mapping brcmf_pcie_fwnames[] = { + BRCMF_FW_NVRAM_ENTRY(BRCM_CC_43602_CHIP_ID, 0xFFFFFFFF, 43602), + BRCMF_FW_NVRAM_ENTRY(BRCM_CC_4350_CHIP_ID, 0xFFFFFFFF, 4350), + BRCMF_FW_NVRAM_ENTRY(BRCM_CC_4356_CHIP_ID, 0xFFFFFFFF, 4356), + BRCMF_FW_NVRAM_ENTRY(BRCM_CC_43567_CHIP_ID, 0xFFFFFFFF, 43570), + BRCMF_FW_NVRAM_ENTRY(BRCM_CC_43569_CHIP_ID, 0xFFFFFFFF, 43570), + BRCMF_FW_NVRAM_ENTRY(BRCM_CC_43570_CHIP_ID, 0xFFFFFFFF, 43570), + BRCMF_FW_NVRAM_ENTRY(BRCM_CC_4358_CHIP_ID, 0xFFFFFFFF, 4358), + BRCMF_FW_NVRAM_ENTRY(BRCM_CC_4359_CHIP_ID, 0xFFFFFFFF, 4359), + BRCMF_FW_NVRAM_ENTRY(BRCM_CC_4365_CHIP_ID, 0xFFFFFFFF, 4365B), + BRCMF_FW_NVRAM_ENTRY(BRCM_CC_4366_CHIP_ID, 0xFFFFFFFF, 4366B), + BRCMF_FW_NVRAM_ENTRY(BRCM_CC_4371_CHIP_ID, 0xFFFFFFFF, 4371), +}; #define BRCMF_PCIE_FW_UP_TIMEOUT 2000 /* msec */@@ -202,26 +206,6 @@ enum brcmf_pcie_state { #define BRCMF_PCIE_LINK_STATUS_CTRL_ASPM_ENAB 3 -MODULE_FIRMWARE(BRCMF_PCIE_43602_FW_NAME); -MODULE_FIRMWARE(BRCMF_PCIE_43602_NVRAM_NAME); -MODULE_FIRMWARE(BRCMF_PCIE_4350_FW_NAME); -MODULE_FIRMWARE(BRCMF_PCIE_4350_NVRAM_NAME);
This change breaks the build with gcc < 4.3:
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:598:
error: redefinition of ‘__UNIQUE_ID_firmware598’
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:598:
error: previous definition of ‘__UNIQUE_ID_firmware598’ was here
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:599:
error: redefinition of ‘__UNIQUE_ID_firmware600’
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:599:
error: previous definition of ‘__UNIQUE_ID_firmware600’ was here
...
The reason is that BRCMF_FW_NVRAM_DEF() expands to two instances of
MODULE_FIRMWARE():
quoted hunk
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h +#define BRCMF_FW_NVRAM_DEF(fw_nvram_name, fw, nvram) \ +static const char BRCM_ ## fw_nvram_name ## _FIRMWARE_NAME[] = \ + BRCMF_FW_DEFAULT_PATH fw; \ +static const char BRCM_ ## fw_nvram_name ## _NVRAM_NAME[] = \ + BRCMF_FW_DEFAULT_PATH nvram; \ +MODULE_FIRMWARE(BRCMF_FW_DEFAULT_PATH fw); \ +MODULE_FIRMWARE(BRCMF_FW_DEFAULT_PATH nvram)
When compiling using gcc < 4.3, __UNIQUE_ID() uses __LINE__ instead of
__COUNTER__, as the latter is not available. Hence it derives a "unique" ID
from the same source line number, causing a redefinition.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds