From patchwork Fri May 20 09:11:53 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: hw/sd.c: Don't complain about SDIO commands CMD52/CMD53 Date: Thu, 19 May 2011 23:11:53 -0000 From: Peter Maydell X-Patchwork-Id: 96566 Message-Id: <1305882713-24997-1-git-send-email-peter.maydell@linaro.org> To: qemu-devel@nongnu.org Cc: qemu-trivial@nongnu.org, patches@linaro.org The SDIO specification introduces new commands 52 and 53. Handle as illegal command but do not complain on stderr, as SDIO-aware OSes (including Linux) may legitimately use these in their probing for presence of an SDIO card. Signed-off-by: Peter Maydell --- hw/sd.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/hw/sd.c b/hw/sd.c index f44a970..cedfb20 100644 --- a/hw/sd.c +++ b/hw/sd.c @@ -1104,6 +1104,17 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, } break; + case 52: + case 53: + /* CMD52, CMD53: reserved for SDIO cards + * (see the SDIO Simplified Specification V2.0) + * Handle as illegal command but do not complain + * on stderr, as some OSes may use these in their + * probing for presence of an SDIO card. + */ + sd->card_status |= ILLEGAL_COMMAND; + return sd_r0; + /* Application specific commands (Class 8) */ case 55: /* CMD55: APP_CMD */ if (sd->rca != rca)