From be8cd6cccf0e3d42f61040bc341ac92a9adde08b Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 22 Mar 2021 11:07:25 +0100 Subject: [PATCH] media: dvb-usb: avoid -Wempty-body warnings Building with 'make W=1' shows many warnings -Wempty-body warnings like drivers/media/usb/dvb-usb/vp702x-fe.c: In function 'vp702x_fe_set_frontend': drivers/media/usb/dvb-usb/vp702x-fe.c:190:46: error: suggest braces around empty body in an 'else' statement [-Werror=empty-body] 190 | deb_fe("tuning succeeded.\n"); drivers/media/usb/dvb-usb/dtt200u.c: In function 'dtt200u_rc_query': drivers/media/usb/dvb-usb/dtt200u.c:124:58: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body] 124 | deb_info("st->data: %*ph\n", 5, st->data); drivers/media/usb/dvb-usb/m920x.c: In function 'm920x_rc_query': drivers/media/usb/dvb-usb/m920x.c:207:58: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body] 207 | deb("Unknown rc key %02x\n", rc_state[1]); Change the empty dprintk() macros to no_printk(), which avoids this warning and adds format string checking. Signed-off-by: Arnd Bergmann Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/dvb-usb/dvb-usb.h | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/media/usb/dvb-usb/dvb-usb.h b/drivers/media/usb/dvb-usb/dvb-usb.h index 4b6eac0..0990aa4 100644 --- a/drivers/media/usb/dvb-usb/dvb-usb.h +++ b/drivers/media/usb/dvb-usb/dvb-usb.h @@ -28,18 +28,19 @@ /* debug */ #ifdef CONFIG_DVB_USB_DEBUG -#define dprintk(var,level,args...) \ - do { if ((var & level)) { printk(args); } } while (0) +#define dprintk(var, level, args...) \ + do { if (((var) & (level))) { printk(args); } } while (0) -#define debug_dump(b,l,func) {\ +#define debug_dump(b, l, func) {\ int loop_; \ - for (loop_ = 0; loop_ < l; loop_++) func("%02x ", b[loop_]); \ + for (loop_ = 0; loop_ < (l); loop_++) \ + func("%02x ", b[loop_]); \ func("\n");\ } #define DVB_USB_DEBUG_STATUS #else -#define dprintk(args...) -#define debug_dump(b,l,func) +#define dprintk(var, level, args...) no_printk(args) +#define debug_dump(b, l, func) do { } while (0) #define DVB_USB_DEBUG_STATUS " (debugging is not enabled)" -- 2.7.4