From: wanggang26 <wanggang26@xxxxxxxxxx>
When the device capacity is larger than 2GB, it shouldn't use c_size but
instead it follows a different calculation using the SEC_COUNT field of
the ext-csd[215:212] - see eMMC spec JESD84-B51 paragraph 7.3.12.
This bug was already in lsmmc when it got merged into mmc-utils, hence
the fixes tag.
Fixes: 4af1749d2350 (mmc-utils: Merge the lsmmc tool into mmc-utils)
Signed-off-by: wanggang26 <wanggang26@xxxxxxxxxx>
---
lsmmc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/lsmmc.c b/lsmmc.c
index c984d9a..9596722 100644
--- a/lsmmc.c
+++ b/lsmmc.c
@@ -1826,6 +1826,9 @@ static void print_mmc_csd_capacity(unsigned int c_size, unsigned int c_size_mult
int block_len = 1 << read_bl_len;
unsigned long long memory_capacity;
+ if (c_size == 0xfff)
+ return;
+
printf("\tC_SIZE: 0x%03x\n", c_size);
printf("\tC_SIZE_MULT: 0x%01x\n", c_size_mult);
--
2.42.0
