Hi Pantelis, > From: Pantelis Antoniou [pa...@antoniou-consulting.com] > Sent: Wednesday, April 02, 2014 14:14 > To: Gabbasov, Andrew > Cc: u-boot@lists.denx.de > Subject: Re: [U-Boot] [PATCH] mmc: Handle switch error status bit in MMC card > status > > Hi Andrew, > > In general looks good; only a small nag. > > On Mar 24, 2014, at 9:39 AM, Andrew Gabbasov wrote: > > > MMC switch command for unsupported feature (e.g. bus width) sets a switch > > error bit in card status. This bit should be checked, and, if it's set, > > no access with new controller settings should be performed. > > > > Signed-off-by: Andrew Gabbasov <andrew_gabba...@mentor.com> > > --- > > drivers/mmc/mmc.c | 4 +++- > > include/mmc.h | 2 ++ > > 2 files changed, 5 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c > > index 8ab0bc9..16105bc 100644 > > --- a/drivers/mmc/mmc.c > > +++ b/drivers/mmc/mmc.c > > @@ -155,6 +155,8 @@ int mmc_send_status(struct mmc *mmc, int timeout) > > #endif > > return TIMEOUT; > > } > > + if (cmd.response[0] & MMC_STATUS_SWITCH_ERROR) > > + return SWITCH_ERR; > > > > return 0; > > } > > @@ -505,7 +507,7 @@ static int mmc_change_freq(struct mmc *mmc) > > err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); > > > > if (err) > > - return err; > > + return ((err == SWITCH_ERR) ? 0 : err); > > > > Change to: > > return err == SWITCH_ERR ? 0 : err; > > No need for parentheses.
Thank you for the review. I'm sending a v2 patch with his change and also re-based to current master head. Thanks! Best regards, Andrew > > > /* Now check to see that it worked */ > > err = mmc_send_ext_csd(mmc, ext_csd); > > diff --git a/include/mmc.h b/include/mmc.h > > index e95a237..d5833f8 100644 > > --- a/include/mmc.h > > +++ b/include/mmc.h > > @@ -53,6 +53,7 @@ > > #define COMM_ERR -18 /* Communications Error */ > > #define TIMEOUT -19 > > #define IN_PROGRESS -20 /* operation is in progress */ > > +#define SWITCH_ERR -21 /* Card reports failure to switch mode */ > > > > #define MMC_CMD_GO_IDLE_STATE 0 > > #define MMC_CMD_SEND_OP_COND 1 > > @@ -108,6 +109,7 @@ > > #define SECURE_ERASE 0x80000000 > > > > #define MMC_STATUS_MASK (~0x0206BF7F) > > +#define MMC_STATUS_SWITCH_ERROR (1 << 7) > > #define MMC_STATUS_RDY_FOR_DATA (1 << 8) > > #define MMC_STATUS_CURR_STATE (0xf << 9) > > #define MMC_STATUS_ERROR (1 << 19) > > -- > > 1.7.10.4 > > Regards > > -- Pantelis > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
