Commit 5402b804 authored Jun 12, 2013 by Chen Gang Committed by Linus Torvalds Jun 12, 2013

lib/mpi/mpicoder.c: looping issue, need stop when equal to zero, found by 'EXTRA_FLAGS=-W'.



For 'while' looping, need stop when 'nbytes == 0', or will cause issue.
('nbytes' is size_t which is always bigger or equal than zero).

The related warning: (with EXTRA_CFLAGS=-W)

  lib/mpi/mpicoder.c:40:2: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: David Howells <dhowells@redhat.com>
Cc: James Morris <james.l.morris@oracle.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 637241a9

lib/mpi/mpicoder.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -37,7 +37,7 @@ MPI mpi_read_raw_data(const void *xbuffer, size_t nbytes)
	mpi_limb_t a;		mpi_limb_t a;
	MPI val = NULL;		MPI val = NULL;

	while (nbytes >= 0 && buffer[0] == 0) {		while (nbytes > 0 && buffer[0] == 0) {
	buffer++;		buffer++;
	nbytes--;		nbytes--;
	}		}