multiboot: Allow searching in volume 0 for redirect file

Searching in volume 0 is necessary for multiboot targets with only
one drive, like the M3K/Q1/ErosQ. Without this the search code will
never look at the redirect file on these targets.

The search bound is configured with a setting MULTIBOOT_MIN_VOLUME,
which defaults to 0, but is defined to 1 for Sansa players so they
keep their old behavior.

Change-Id: I6dc5cf98db4258731de2c68c3ab1182b4a4a655b

1 files changed, 1 insertions, 1 deletions

diff --git a/firmware/common/rb-loader.c b/firmware/common/rb-loader.c
index e3fc90342c..430ed6ec7b 100644
--- a/firmware/common/rb-loader.c
+++ b/firmware/common/rb-loader.c
@@ -106,7 +106,7 @@ int load_firmware(unsigned char* buf, const char* firmware, int buffer_size)
          * 0 is the default boot volume, it is not checked here
          * if found <volume>/rockbox_main.<playername> and firmware
          * has a bootdata region this firmware will be loaded */
-        for (unsigned int i = NUM_VOLUMES - 1; i > 0 && ret < 0; i--)
+        for (int i = NUM_VOLUMES - 1; i >= MULTIBOOT_MIN_VOLUME && ret < 0; i--)
         {
             if (get_redirect_dir(filename, sizeof(filename), i,
                                  BOOTDIR, firmware) > 0)