flash_info: allow people to get info on multiple devices

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

diff --git a/flash_info.c b/flash_info.c
index d4887dae399aefa6d9862a6597f816b97d7a92f8..6c518b22509d7020e7cbb840ae1f518a165295ec 100644 (file)
--- a/flash_info.c
+++ b/flash_info.c
@@ -18,39 +18,45 @@
 static void usage(int status)
 {
        fprintf(status ? stderr : stdout,
-               "Usage: %s <device>\n",
+               "Usage: %s <device> [devices]\n",
                PROGRAM_NAME);
        exit(status);
 }
 
 int main(int argc, char *argv[])
 {
-       int regcount;
-       int fd;
+       int fd, i, regcount;
 
        if (argc < 2)
                usage(1);
        if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
                usage(0);
 
-       /* Open and size the device */
-       fd = open(argv[1], O_RDONLY);
-       if (fd < 0)
-               sys_errmsg_die("could not open: %s", argv[1]);
-
-       if (ioctl(fd, MEMGETREGIONCOUNT, &regcount) == 0) {
-               int i;
+       for (i = 1; i < argc; ++i) {
+               const char *dev = argv[i];
+               int r;
                region_info_t reginfo;
-               printf("Device %s has %d erase regions\n", argv[1], regcount);
-               for (i = 0; i < regcount; i++) {
-                       reginfo.regionindex = i;
+
+               /* Open and size the device */
+               fd = open(dev, O_RDONLY);
+               if (fd < 0) {
+                       sys_errmsg("could not open: %s", dev);
+                       continue;
+               }
+
+               if (ioctl(fd, MEMGETREGIONCOUNT, &regcount))
+                       continue;
+
+               printf("%s: %d erase regions\n", dev, regcount);
+               for (r = 0; r < regcount; ++r) {
+                       reginfo.regionindex = r;
                        if (ioctl(fd, MEMGETREGIONINFO, &reginfo) == 0) {
                                printf("Region %d is at 0x%x with size 0x%x and "
-                                               "has 0x%x blocks\n", i, reginfo.offset,
+                                               "has 0x%x blocks\n", r, reginfo.offset,
                                                reginfo.erasesize, reginfo.numblocks);
                        } else {
                                warnmsg("can not read region %d from a %d region device",
-                                       i, regcount);
+                                       r, regcount);
                        }
                }
        }