From 611aa19fd60fe57059d9972fa6ae29f7472a13cf Mon Sep 17 00:00:00 2001 From: Stefan Richter Date: Wed, 2 Aug 2006 18:44:00 +0200 Subject: ieee1394: safer definition of empty macros A deactivated macro, defined as "#define foo(bar)", will result in silent corruption if somebody forgets a semicolon after a call to foo. Replace it by "#define foo(bar) do {} while (0)" which will reveal any respective syntax errors. Signed-off-by: Stefan Richter --- drivers/ieee1394/dv1394.c | 4 ++-- drivers/ieee1394/ieee1394_core.c | 2 +- drivers/ieee1394/ieee1394_types.h | 2 +- drivers/ieee1394/ohci1394.c | 8 ++++---- drivers/ieee1394/raw1394.c | 2 +- drivers/ieee1394/sbp2.c | 18 +++++++++--------- drivers/ieee1394/video1394.c | 2 +- 7 files changed, 19 insertions(+), 19 deletions(-) diff --git a/drivers/ieee1394/dv1394.c b/drivers/ieee1394/dv1394.c index 6e71d68b109..6c72f04b2b5 100644 --- a/drivers/ieee1394/dv1394.c +++ b/drivers/ieee1394/dv1394.c @@ -137,13 +137,13 @@ #if DV1394_DEBUG_LEVEL >= 2 #define irq_printk( args... ) printk( args ) #else -#define irq_printk( args... ) +#define irq_printk( args... ) do {} while (0) #endif #if DV1394_DEBUG_LEVEL >= 1 #define debug_printk( args... ) printk( args) #else -#define debug_printk( args... ) +#define debug_printk( args... ) do {} while (0) #endif /* issue a dummy PCI read to force the preceding write diff --git a/drivers/ieee1394/ieee1394_core.c b/drivers/ieee1394/ieee1394_core.c index 991c378496f..5fccf9f7a1d 100644 --- a/drivers/ieee1394/ieee1394_core.c +++ b/drivers/ieee1394/ieee1394_core.c @@ -85,7 +85,7 @@ static void dump_packet(const char *text, quadlet_t *data, int size, int speed) printk("\n"); } #else -#define dump_packet(a,b,c,d) +#define dump_packet(a,b,c,d) do {} while (0) #endif static void abort_requests(struct hpsb_host *host); diff --git a/drivers/ieee1394/ieee1394_types.h b/drivers/ieee1394/ieee1394_types.h index a8de375e79b..9803aaa15be 100644 --- a/drivers/ieee1394/ieee1394_types.h +++ b/drivers/ieee1394/ieee1394_types.h @@ -41,7 +41,7 @@ typedef u16 arm_length_t; #define HPSB_VERBOSE(fmt, args...) HPSB_PRINT(KERN_DEBUG, fmt , ## args) #define HPSB_DEBUG_TLABELS #else -#define HPSB_VERBOSE(fmt, args...) +#define HPSB_VERBOSE(fmt, args...) do {} while (0) #endif #ifdef __BIG_ENDIAN diff --git a/drivers/ieee1394/ohci1394.c b/drivers/ieee1394/ohci1394.c index 330dcf7c699..ea14c831ff4 100644 --- a/drivers/ieee1394/ohci1394.c +++ b/drivers/ieee1394/ohci1394.c @@ -136,7 +136,7 @@ #define DBGMSG(fmt, args...) \ printk(KERN_INFO "%s: fw-host%d: " fmt "\n" , OHCI1394_DRIVER_NAME, ohci->host->id , ## args) #else -#define DBGMSG(fmt, args...) +#define DBGMSG(fmt, args...) do {} while (0) #endif #ifdef CONFIG_IEEE1394_OHCI_DMA_DEBUG @@ -148,8 +148,8 @@ printk(KERN_INFO "%s: fw-host%d: " fmt "\n" , OHCI1394_DRIVER_NAME, ohci->host-> --global_outstanding_dmas, ## args) static int global_outstanding_dmas = 0; #else -#define OHCI_DMA_ALLOC(fmt, args...) -#define OHCI_DMA_FREE(fmt, args...) +#define OHCI_DMA_ALLOC(fmt, args...) do {} while (0) +#define OHCI_DMA_FREE(fmt, args...) do {} while (0) #endif /* print general (card independent) information */ @@ -210,7 +210,7 @@ static inline void packet_swab(quadlet_t *data, int tcode) } #else /* Don't waste cycles on same sex byte swaps */ -#define packet_swab(w,x) +#define packet_swab(w,x) do {} while (0) #endif /* !LITTLE_ENDIAN */ /*********************************** diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c index 840b705fd5d..47e66759324 100644 --- a/drivers/ieee1394/raw1394.c +++ b/drivers/ieee1394/raw1394.c @@ -67,7 +67,7 @@ #define DBGMSG(fmt, args...) \ printk(KERN_INFO "raw1394:" fmt "\n" , ## args) #else -#define DBGMSG(fmt, args...) +#define DBGMSG(fmt, args...) do {} while (0) #endif static LIST_HEAD(host_info_list); diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c index 1c8ce7acba8..668b4512def 100644 --- a/drivers/ieee1394/sbp2.c +++ b/drivers/ieee1394/sbp2.c @@ -203,9 +203,9 @@ static u32 global_outstanding_command_orbs = 0; #define outstanding_orb_incr global_outstanding_command_orbs++ #define outstanding_orb_decr global_outstanding_command_orbs-- #else -#define SBP2_ORB_DEBUG(fmt, args...) -#define outstanding_orb_incr -#define outstanding_orb_decr +#define SBP2_ORB_DEBUG(fmt, args...) do {} while (0) +#define outstanding_orb_incr do {} while (0) +#define outstanding_orb_decr do {} while (0) #endif #ifdef CONFIG_IEEE1394_SBP2_DEBUG_DMA @@ -217,8 +217,8 @@ static u32 global_outstanding_command_orbs = 0; --global_outstanding_dmas, ## args) static u32 global_outstanding_dmas = 0; #else -#define SBP2_DMA_ALLOC(fmt, args...) -#define SBP2_DMA_FREE(fmt, args...) +#define SBP2_DMA_ALLOC(fmt, args...) do {} while (0) +#define SBP2_DMA_FREE(fmt, args...) do {} while (0) #endif #if CONFIG_IEEE1394_SBP2_DEBUG >= 2 @@ -232,7 +232,7 @@ static u32 global_outstanding_dmas = 0; #define SBP2_NOTICE(fmt, args...) HPSB_NOTICE("sbp2: "fmt, ## args) #define SBP2_WARN(fmt, args...) HPSB_WARN("sbp2: "fmt, ## args) #else -#define SBP2_DEBUG(fmt, args...) +#define SBP2_DEBUG(fmt, args...) do {} while (0) #define SBP2_INFO(fmt, args...) HPSB_INFO("sbp2: "fmt, ## args) #define SBP2_NOTICE(fmt, args...) HPSB_NOTICE("sbp2: "fmt, ## args) #define SBP2_WARN(fmt, args...) HPSB_WARN("sbp2: "fmt, ## args) @@ -375,8 +375,8 @@ static inline void sbp2util_cpu_to_be32_buffer(void *buffer, int length) } #else /* BIG_ENDIAN */ /* Why waste the cpu cycles? */ -#define sbp2util_be32_to_cpu_buffer(x,y) -#define sbp2util_cpu_to_be32_buffer(x,y) +#define sbp2util_be32_to_cpu_buffer(x,y) do {} while (0) +#define sbp2util_cpu_to_be32_buffer(x,y) do {} while (0) #endif #ifdef CONFIG_IEEE1394_SBP2_PACKET_DUMP @@ -412,7 +412,7 @@ static void sbp2util_packet_dump(void *buffer, int length, char *dump_name, return; } #else -#define sbp2util_packet_dump(w,x,y,z) +#define sbp2util_packet_dump(w,x,y,z) do {} while (0) #endif static DECLARE_WAIT_QUEUE_HEAD(access_wq); diff --git a/drivers/ieee1394/video1394.c b/drivers/ieee1394/video1394.c index af78b840dc2..9bc65059cc6 100644 --- a/drivers/ieee1394/video1394.c +++ b/drivers/ieee1394/video1394.c @@ -129,7 +129,7 @@ struct file_ctx { #define DBGMSG(card, fmt, args...) \ printk(KERN_INFO "video1394_%d: " fmt "\n" , card , ## args) #else -#define DBGMSG(card, fmt, args...) +#define DBGMSG(card, fmt, args...) do {} while (0) #endif /* print general (card independent) information */ -- cgit v1.2.3