nfp: update nfp_X logging definitions

Previously it was not possible to determine which code path was responsible
for generating a certain message after a call to the nfp_X messaging
definitions for cases of duplicate strings. We therefore modify nfp_err,
nfp_warn, nfp_info, nfp_dbg and nfp_printk to print the corresponding file
and line number where the nfp_X definition is used.

Signed-off-by: Dylan Muller <[e-mail]>
Signed-off-by: Simon Horman <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpp.h

···
 #include <linux/ctype.h>
 #include <linux/types.h>
 #include <linux/sizes.h>
+#include <linux/stringify.h>
 
 #ifndef NFP_SUBSYS
 #define NFP_SUBSYS "nfp"
 #endif
 
-#define nfp_err(cpp, fmt, args...) \
+#define string_format(x) __FILE__ ":" __stringify(__LINE__) ": " x
+
+#define __nfp_err(cpp, fmt, args...) \
 	dev_err(nfp_cpp_device(cpp)->parent, NFP_SUBSYS ": " fmt, ## args)
-#define nfp_warn(cpp, fmt, args...) \
+#define __nfp_warn(cpp, fmt, args...) \
 	dev_warn(nfp_cpp_device(cpp)->parent, NFP_SUBSYS ": " fmt, ## args)
-#define nfp_info(cpp, fmt, args...) \
+#define __nfp_info(cpp, fmt, args...) \
 	dev_info(nfp_cpp_device(cpp)->parent, NFP_SUBSYS ": " fmt, ## args)
-#define nfp_dbg(cpp, fmt, args...) \
+#define __nfp_dbg(cpp, fmt, args...) \
 	dev_dbg(nfp_cpp_device(cpp)->parent, NFP_SUBSYS ": " fmt, ## args)
+#define __nfp_printk(level, cpp, fmt, args...) \
+	dev_printk(level, nfp_cpp_device(cpp)->parent,  \
+		   NFP_SUBSYS ": " fmt, ## args)
+
+#define nfp_err(cpp, fmt, args...) \
+	__nfp_err(cpp, string_format(fmt), ## args)
+#define nfp_warn(cpp, fmt, args...) \
+	__nfp_warn(cpp, string_format(fmt), ## args)
+#define nfp_info(cpp, fmt, args...) \
+	__nfp_info(cpp, string_format(fmt), ## args)
+#define nfp_dbg(cpp, fmt, args...) \
+	__nfp_dbg(cpp, string_format(fmt), ## args)
 #define nfp_printk(level, cpp, fmt, args...) \
-	dev_printk(level, nfp_cpp_device(cpp)->parent,	\
-		   NFP_SUBSYS ": " fmt,	## args)
+	__nfp_printk(level, cpp, string_format(fmt), ## args)
 
 #define PCI_64BIT_BAR_COUNT             3