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authorStefan Richter <stefanr@s5r6.in-berlin.de>2006-08-02 18:44:00 +0200
committerStefan Richter <stefanr@s5r6.in-berlin.de>2006-09-17 19:31:20 +0200
commit611aa19fd60fe57059d9972fa6ae29f7472a13cf (patch)
treea87f71ef393eec3e904291d1d5da1f2fdc5bb11b
parent4b60912e52bc6ccdf587f2b92f3435ee2678d730 (diff)
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 <stefanr@s5r6.in-berlin.de>
-rw-r--r--drivers/ieee1394/dv1394.c4
-rw-r--r--drivers/ieee1394/ieee1394_core.c2
-rw-r--r--drivers/ieee1394/ieee1394_types.h2
-rw-r--r--drivers/ieee1394/ohci1394.c8
-rw-r--r--drivers/ieee1394/raw1394.c2
-rw-r--r--drivers/ieee1394/sbp2.c18
-rw-r--r--drivers/ieee1394/video1394.c2
7 files changed, 19 insertions, 19 deletions
diff --git a/drivers/ieee1394/dv1394.c b/drivers/ieee1394/dv1394.c
index 6e71d68b1099..6c72f04b2b5d 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 991c378496f8..5fccf9f7a1d2 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 a8de375e79b7..9803aaa15be0 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 330dcf7c699d..ea14c831ff41 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 840b705fd5dd..47e667593244 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 1c8ce7acba82..668b4512deff 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 af78b840dc26..9bc65059cc69 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 */