[PATCH 1/2] kexec: Fix return value build warnings

Geoff Levand
2013-10-03T20:19:34Z

Add a local variable 'result' to the putnode() routine of
ds2dt and use it to hold return values of calls to read().

Fixes build warnings like these:

kexec/fs2dt.c: warning: ignoring return value of ‘read’

Signed-off-by: Geoff Levand <geoff@infradead.org> for Huawei, Linaro
---
kexec/fs2dt.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/kexec/fs2dt.c b/kexec/fs2dt.c
index 1f5b0cf..98d6cb4 100644
--- a/kexec/fs2dt.c
+++ b/kexec/fs2dt.c
@@ -555,6 +555,7 @@ static void putnode(void)
/* Add cmdline to the second kernel. Check to see if the new
* cmdline has a root=. If not, use the old root= cmdline. */
if (!strcmp(basename,"chosen/")) {
+ size_t result;
size_t cmd_len = 0;
char *param = NULL;
char filename[MAXPATH];
@@ -636,7 +637,7 @@ static void putnode(void)
close(fd);
goto no_debug;
}
- read(fd, buff, statbuf.st_size);
+ result = read(fd, buff, statbuf.st_size);
close(fd);
strncpy(filename, "/proc/device-tree/", MAXPATH);
strncat(filename, buff, MAXPATH);
@@ -659,7 +660,7 @@ static void putnode(void)
close(fd);
goto no_debug;
}
- read(fd, buff, statbuf.st_size);
+ result = read(fd, buff, statbuf.st_size);
if (!strcmp(buff, "hvterm1") || !strcmp(buff, "hvterm-protocol"))
my_debug = 1;
close(fd);