The steps: 1. add "#define DEBUG" in drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c line 61. 2. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- O=../Out_Linux bcm2835_defconfig 3. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- O=../Out_Linux/ zImage modules dtbs -j8 Then, it will fail, the compile log described below: Kernel: arch/arm/boot/zImage is ready MODPOST Module.symvers ERROR: modpost: "brcmf_debugfs_add_entry" [drivers/net/wireless/broadcom/brcm80211/brcmfmac/brcmfmac.ko] undefined! ERROR: modpost: "brcmf_debugfs_get_devdir" [drivers/net/wireless/broadcom/brcm80211/brcmfmac/brcmfmac.ko] undefined! ERROR: modpost: "__brcmf_dbg" [drivers/net/wireless/broadcom/brcm80211/brcmfmac/brcmfmac.ko] undefined! scripts/Makefile.modpost:111: recipe for target 'Module.symvers' failed make[2]: *** [Module.symvers] Error 1 make[2]: *** Deleting file 'Module.symvers' Makefile:1390: recipe for target 'modules' failed make[1]: *** [modules] Error 2 make[1]: Leaving directory '/home/hby/gitee/linux_origin/Out_Linux' Makefile:185: recipe for target '__sub-make' failed make: *** [__sub-make] Error 2 Signed-off-by: hby <hby2003@xxxxxxx> --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h index 4146faeed..c2eb3aa67 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h @@ -60,7 +60,7 @@ void __brcmf_err(struct brcmf_bus *bus, const char *func, const char *fmt, ...); ##__VA_ARGS__); \ } while (0) -#if defined(DEBUG) || defined(CONFIG_BRCM_TRACING) +#if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG) /* For debug/tracing purposes treat info messages as errors */ #define brcmf_info brcmf_err @@ -114,7 +114,7 @@ extern int brcmf_msg_level; struct brcmf_bus; struct brcmf_pub; -#ifdef DEBUG +#if defined(CONFIG_BRCMDBG) struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr); void brcmf_debugfs_add_entry(struct brcmf_pub *drvr, const char *fn, int (*read_fn)(struct seq_file *seq, void *data)); -- 2.17.1
