fs/partitions: mtdpart: add command line fix for rk emmc

diff --git a/fs/partitions/mtdpart.c b/fs/partitions/mtdpart.c
index 7e93ddd7026ba2eab7872cdc314d333ea520a046..b4b353ac7b7b64f7071a3125a8fc8ed8b230f2d7 100644 (file)
--- a/fs/partitions/mtdpart.c
+++ b/fs/partitions/mtdpart.c
@@ -311,6 +311,23 @@ static int parse_cmdline_partitions(sector_t n,
        return 0;
 }
 
+static void rk_emmc_fix(void)
+{
+       const char mode_emmc[] = " androidboot.mode=emmc";
+       const char charger_emmc[] = " androidboot.charger.emmc=1";
+       char *new_command_line;
+       size_t saved_command_line_len = strlen(saved_command_line);
+
+       if (strstr(saved_command_line, "androidboot.mode=charger")) {
+               new_command_line = kzalloc(saved_command_line_len + strlen(charger_emmc) + 1, GFP_KERNEL);
+               sprintf(new_command_line, "%s%s", saved_command_line, charger_emmc);
+       } else {
+               new_command_line = kzalloc(saved_command_line_len + strlen(mode_emmc) + 1, GFP_KERNEL);
+               sprintf(new_command_line, "%s%s", saved_command_line, mode_emmc);
+       }
+       saved_command_line = new_command_line;
+}
+
 int mtdpart_partition(struct parsed_partitions *state)
 {
        int num_parts = 0, i;
@@ -320,6 +337,9 @@ int mtdpart_partition(struct parsed_partitions *state)
        if(n < SECTOR_1G)
                return 0;
 
+       if (state->bdev->bd_disk->major != MMC_BLOCK_MAJOR || state->bdev->bd_disk->first_minor != 0)
+               return 0;
+
        cmdline = strstr(saved_command_line, "mtdparts=") + 9;
        
        num_parts = parse_cmdline_partitions(n, &parts, 0);
@@ -336,6 +356,8 @@ int mtdpart_partition(struct parsed_partitions *state)
                                parts[i].size / 2048);
        }
 
+       rk_emmc_fix();
+
        return 1;
 }