Fix sparse warning: Using plain integer as NULL pointer

This patch fixes the "using plain integer as NULL pointer" warnings
generated by running sparse on the flashrom source.

Corresponding to flashrom svn r1255.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Acked-by: Mathias Krause <mathias.krause@secunet.com>
Acked-by: Stefan Reinauer <stepan@coreboot.org>

7 files changed, 27 insertions, 27 deletions

diff --git a/cbtable.c b/cbtable.c
index dbb2cff04..f30a3ae9e 100644
--- a/cbtable.c
+++ b/cbtable.c
@@ -141,7 +141,7 @@ static struct lb_header *find_lb_table(void *base, unsigned long start,
 
 	};
 
-	return 0;
+	return NULL;
 }
 
 static void find_mainboard(struct lb_record *ptr, unsigned long addr)
diff --git a/chipset_enable.c b/chipset_enable.c
index 6d6008ef3..0896bce2f 100644
--- a/chipset_enable.c
+++ b/chipset_enable.c
@@ -1173,7 +1173,7 @@ const struct penable chipset_enables[] = {
 
 int chipset_flash_enable(void)
 {
-	struct pci_dev *dev = 0;
+	struct pci_dev *dev = NULL;
 	int ret = -2;		/* Nothing! */
 	int i;
 
diff --git a/cli_classic.c b/cli_classic.c
index 12119896d..88b70dbd0 100644
--- a/cli_classic.c
+++ b/cli_classic.c
@@ -116,23 +116,23 @@ int cli_classic(int argc, char *argv[])
 
 	static const char optstring[] = "r:Rw:v:nVEfc:m:l:i:p:Lzh";
 	static const struct option long_options[] = {
-		{"read", 1, 0, 'r'},
-		{"write", 1, 0, 'w'},
-		{"erase", 0, 0, 'E'},
-		{"verify", 1, 0, 'v'},
-		{"noverify", 0, 0, 'n'},
-		{"chip", 1, 0, 'c'},
-		{"mainboard", 1, 0, 'm'},
-		{"verbose", 0, 0, 'V'},
-		{"force", 0, 0, 'f'},
-		{"layout", 1, 0, 'l'},
-		{"image", 1, 0, 'i'},
-		{"list-supported", 0, 0, 'L'},
-		{"list-supported-wiki", 0, 0, 'z'},
-		{"programmer", 1, 0, 'p'},
-		{"help", 0, 0, 'h'},
-		{"version", 0, 0, 'R'},
-		{0, 0, 0, 0}
+		{"read", 1, NULL, 'r'},
+		{"write", 1, NULL, 'w'},
+		{"erase", 0, NULL, 'E'},
+		{"verify", 1, NULL, 'v'},
+		{"noverify", 0, NULL, 'n'},
+		{"chip", 1, NULL, 'c'},
+		{"mainboard", 1, NULL, 'm'},
+		{"verbose", 0, NULL, 'V'},
+		{"force", 0, NULL, 'f'},
+		{"layout", 1, NULL, 'l'},
+		{"image", 1, NULL, 'i'},
+		{"list-supported", 0, NULL, 'L'},
+		{"list-supported-wiki", 0, NULL, 'z'},
+		{"programmer", 1, NULL, 'p'},
+		{"help", 0, NULL, 'h'},
+		{"version", 0, NULL, 'R'},
+		{NULL, 0, NULL, 0}
 	};
 
 	char *filename = NULL;
diff --git a/physmap.c b/physmap.c
index 4641e8ec3..70156a67d 100644
--- a/physmap.c
+++ b/physmap.c
@@ -180,7 +180,7 @@ static void *sys_physmap_rw_uncached(unsigned long phys_addr, size_t len)
 		}
 	}
 
-	virt_addr = mmap(0, len, PROT_WRITE | PROT_READ, MAP_SHARED,
+	virt_addr = mmap(NULL, len, PROT_WRITE | PROT_READ, MAP_SHARED,
 			 fd_mem, (off_t)phys_addr);
 	return MAP_FAILED == virt_addr ? ERROR_PTR : virt_addr;
 }
@@ -200,7 +200,7 @@ static void *sys_physmap_ro_cached(unsigned long phys_addr, size_t len)
 		}
 	}
 
-	virt_addr = mmap(0, len, PROT_READ, MAP_SHARED,
+	virt_addr = mmap(NULL, len, PROT_READ, MAP_SHARED,
 			 fd_mem_cached, (off_t)phys_addr);
 	return MAP_FAILED == virt_addr ? ERROR_PTR : virt_addr;
 }
diff --git a/programmer.c b/programmer.c
index 016086781..5c1f9632d 100644
--- a/programmer.c
+++ b/programmer.c
@@ -30,7 +30,7 @@ int noop_shutdown(void)
 void *fallback_map(const char *descr, unsigned long phys_addr, size_t len)
 {
 	/* FIXME: Should return phys_addr. */
-	return 0;
+	return NULL;
 }
 
 /* No-op/fallback unmap() for programmers which don't need special handling */
diff --git a/serprog.c b/serprog.c
index 2cdfea66c..f869b076e 100644
--- a/serprog.c
+++ b/serprog.c
@@ -541,7 +541,7 @@ static void sp_execute_opbuf_noflush(void)
 {
 	if ((sp_max_write_n) && (sp_write_n_bytes))
 		sp_pass_writen();
-	sp_stream_buffer_op(S_CMD_O_EXEC, 0, 0);
+	sp_stream_buffer_op(S_CMD_O_EXEC, 0, NULL);
 	msg_pspew(MSGHEADER "Executed operation buffer of %d bytes\n",
 		     sp_opbuf_usage);
 	sp_opbuf_usage = 0;
diff --git a/udelay.c b/udelay.c
index 153f51045..feae82708 100644
--- a/udelay.c
+++ b/udelay.c
@@ -45,11 +45,11 @@ static unsigned long measure_os_delay_resolution(void)
 	struct timeval start, end;
 	unsigned long counter = 0;
 	
-	gettimeofday(&start, 0);
+	gettimeofday(&start, NULL);
 	timeusec = 0;
 	
 	while (!timeusec && (++counter < 1000000000)) {
-		gettimeofday(&end, 0);
+		gettimeofday(&end, NULL);
 		timeusec = 1000000 * (end.tv_sec - start.tv_sec) +
 			   (end.tv_usec - start.tv_usec);
 		/* Protect against time going forward too much. */
@@ -68,9 +68,9 @@ static unsigned long measure_delay(int usecs)
 	unsigned long timeusec;
 	struct timeval start, end;
 	
-	gettimeofday(&start, 0);
+	gettimeofday(&start, NULL);
 	myusec_delay(usecs);
-	gettimeofday(&end, 0);
+	gettimeofday(&end, NULL);
 	timeusec = 1000000 * (end.tv_sec - start.tv_sec) +
 		   (end.tv_usec - start.tv_usec);
 	/* Protect against time going forward too much. */