On 6/25/24 5:32 PM, Philippe Mathieu-Daudé wrote:
On 25/6/24 17:13, Cédric Le Goater wrote:
On 6/25/24 5:04 PM, Philippe Mathieu-Daudé wrote:
Hi Cédric,

On 3/7/23 15:24, Cédric Le Goater wrote:
Signed-off-by: Cédric Le Goater <c...@kaod.org>
---
  hw/sd/sd.c | 6 ++++++
  1 file changed, 6 insertions(+)

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 5ff132139ea9..95cb46b87519 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -2207,6 +2207,11 @@ static sd_rsp_type_t emmc_cmd_ALL_SEND_CID(SDState *sd, 
SDRequest req)
      return sd_r2_i;
  }
+static sd_rsp_type_t emmc_cmd_APP_CMD(SDState *sd, SDRequest req)
+{
+    return sd_r0;

Why are you returning R0? This is invalid, only R1 can be
returned by APP_CMD.

Probably a typo. This is old ... 4/5 years at least.

Well, a smart typo, because it hides unimplemented features
(and probably some bugs). Maybe someone clever used R0 on
purpose :)

I can't tell. The initial patch [*] had :

@@ -1115,6 +1219,11 @@ static sd_rsp_type_t sd_normal_command(SDState *sd,
/* Application specific commands (Class 8) */
     case 55:   /* CMD55:  APP_CMD */
+        /* Not supported by MMC */
+        if (sd->emmc) {
+            return sd_r0;
+        }
+

but it's 13 years old now.

Thanks,

C.


[*] 
https://lore.kernel.org/qemu-devel/1311635951-11047-5-git-send-email-vpala...@chromium.org/


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