[U-Boot] [PATCH v3 27/54] mmc: Avoid using printf() for errors

[Chen-Yu Tsai]

On Wed, Jun 24, 2015 at 5:38 AM, Simon Glass <sjg at chromium.org> wrote:
> These bloat the code and cause problems for SPL. Use debug() where possible
> and try to return a useful error code instead.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
> Changes in v3: None
> Changes in v2: None
>
>  drivers/mmc/dw_mmc.c | 21 +++++++++++----------

Subject line and description should show this is dwmmc specific.

ChenYu

>  1 file changed, 11 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
> index 53a8aca..8f28d7e 100644
> --- a/drivers/mmc/dw_mmc.c
> +++ b/drivers/mmc/dw_mmc.c
> @@ -8,6 +8,7 @@
>
>  #include <bouncebuf.h>
>  #include <common.h>
> +#include <errno.h>
>  #include <malloc.h>
>  #include <mmc.h>
>  #include <dwmmc.h>
> @@ -119,7 +120,7 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
>
>         while (dwmci_readl(host, DWMCI_STATUS) & DWMCI_BUSY) {
>                 if (get_timer(start) > timeout) {
> -                       printf("%s: Timeout on data busy\n", __func__);
> +                       debug("%s: Timeout on data busy\n", __func__);
>                         return TIMEOUT;
>                 }
>         }
> @@ -178,7 +179,7 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
>         }
>
>         if (i == retry) {
> -               printf("%s: Timeout.\n", __func__);
> +               debug("%s: Timeout.\n", __func__);
>                 return TIMEOUT;
>         }
>
> @@ -194,8 +195,8 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
>                 debug("%s: Response Timeout.\n", __func__);
>                 return TIMEOUT;
>         } else if (mask & DWMCI_INTMSK_RE) {
> -               printf("%s: Response Error.\n", __func__);
> -               return -1;
> +               debug("%s: Response Error.\n", __func__);
> +               return -EIO;
>         }
>
>
> @@ -214,7 +215,7 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
>                 do {
>                         mask = dwmci_readl(host, DWMCI_RINTSTS);
>                         if (mask & (DWMCI_DATA_ERR | DWMCI_DATA_TOUT)) {
> -                               printf("%s: DATA ERROR!\n", __func__);
> +                               debug("%s: DATA ERROR!\n", __func__);
>                                 return -1;
>                         }
>                 } while (!(mask & DWMCI_INTMSK_DTO));
> @@ -251,7 +252,7 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq)
>         else if (host->bus_hz)
>                 sclk = host->bus_hz;
>         else {
> -               printf("%s: Didn't get source clock value.\n", __func__);
> +               debug("%s: Didn't get source clock value.\n", __func__);
>                 return -EINVAL;
>         }
>
> @@ -270,7 +271,7 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq)
>         do {
>                 status = dwmci_readl(host, DWMCI_CMD);
>                 if (timeout-- < 0) {
> -                       printf("%s: Timeout!\n", __func__);
> +                       debug("%s: Timeout!\n", __func__);
>                         return -ETIMEDOUT;
>                 }
>         } while (status & DWMCI_CMD_START);
> @@ -285,7 +286,7 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq)
>         do {
>                 status = dwmci_readl(host, DWMCI_CMD);
>                 if (timeout-- < 0) {
> -                       printf("%s: Timeout!\n", __func__);
> +                       debug("%s: Timeout!\n", __func__);
>                         return -ETIMEDOUT;
>                 }
>         } while (status & DWMCI_CMD_START);
> @@ -339,8 +340,8 @@ static int dwmci_init(struct mmc *mmc)
>         dwmci_writel(host, DWMCI_PWREN, 1);
>
>         if (!dwmci_wait_reset(host, DWMCI_RESET_ALL)) {
> -               printf("%s[%d] Fail-reset!!\n", __func__, __LINE__);
> -               return -1;
> +               debug("%s[%d] Fail-reset!!\n", __func__, __LINE__);
> +               return -EIO;
>         }
>
>         /* Enumerate at 400KHz */
> --
> 2.4.3.573.g4eafbef
>
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