[PATCH v2 1/5] dfu: mmc: use the default MMC device if entity specifies it as -1

[Marek Szyprowski]

Use the default MMC device set in the command line if entity specifies it
as -1. This allows to use the same dfu_alt_info string for different MMC
devices (like embedded eMMC and external SD card if data layout is the
same on both devices).

Signed-off-by: Marek Szyprowski <m.szyprowski at samsung.com>
---
 drivers/dfu/dfu_mmc.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c
index 691d01c7eb..784d0ec76b 100644
--- a/drivers/dfu/dfu_mmc.c
+++ b/drivers/dfu/dfu_mmc.c
@@ -316,7 +316,7 @@ void dfu_free_entity_mmc(struct dfu_entity *dfu)
 int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s)
 {
 	const char *entity_type;
-	size_t second_arg;
+	ssize_t second_arg;
 	size_t third_arg;
 
 	struct mmc *mmc;
@@ -339,7 +339,7 @@ int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s)
 	 * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8,
 	 * with default 10.
 	 */
-	second_arg = simple_strtoul(argv[1], NULL, 0);
+	second_arg = simple_strtol(argv[1], NULL, 0);
 	third_arg = simple_strtoul(argv[2], NULL, 0);
 
 	mmc = find_mmc_device(dfu->data.mmc.dev_num);
@@ -406,7 +406,8 @@ int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s)
 
 	/* if it's NOT a raw write */
 	if (strcmp(entity_type, "raw")) {
-		dfu->data.mmc.dev = second_arg;
+		dfu->data.mmc.dev = (second_arg != -1) ? second_arg :
+							 dfu->data.mmc.dev_num;
 		dfu->data.mmc.part = third_arg;
 	}
 
-- 
2.17.1