Re: [PATCH 2/2] mmc: sdhci-pci-o2micro: Convert PCIBIOS_* return codes to errnos

From: Adrian Hunter
Date: Mon Jun 03 2024 - 03:17:02 EST

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On 27/05/24 16:24, Ilpo Järvinen wrote:
> sdhci_pci_o2_probe() uses pci_read_config_{byte,dword}() that return
> PCIBIOS_* codes. The return code is then returned as is but as
> sdhci_pci_o2_probe() is probe function chain, it should return normal
> errnos.
>
> Convert PCIBIOS_* returns code using pcibios_err_to_errno() into normal
> errno before returning them. Add a label for read failure so that the
> conversion can be done in one place rather than on all of the return
> statements.
>
> Fixes: 3d757ddbd68c ("mmc: sdhci-pci-o2micro: add Bayhub new chip GG8 support for UHS-I")
> Fixes: d599005afde8 ("mmc: sdhci-pci-o2micro: Add missing checks in sdhci_pci_o2_probe")
> Fixes: 706adf6bc31c ("mmc: sdhci-pci-o2micro: Add SeaBird SeaEagle SD3 support")
> Fixes: 01acf6917aed ("mmc: sdhci-pci: add support of O2Micro/BayHubTech SD hosts")
> Fixes: 26daa1ed40c6 ("mmc: sdhci: Disable ADMA on some O2Micro SD/MMC parts.")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>

Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>

> ---
> drivers/mmc/host/sdhci-pci-o2micro.c | 41 +++++++++++++++-------------
> 1 file changed, 22 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-pci-o2micro.c b/drivers/mmc/host/sdhci-pci-o2micro.c
> index d4a02184784a..058bef1c7e41 100644
> --- a/drivers/mmc/host/sdhci-pci-o2micro.c
> +++ b/drivers/mmc/host/sdhci-pci-o2micro.c
> @@ -823,7 +823,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_byte(chip->pdev,
> O2_SD_LOCK_WP, &scratch);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch &= 0x7f;
> pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
>
> @@ -834,7 +834,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_byte(chip->pdev,
> O2_SD_CLKREQ, &scratch);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch |= 0x20;
> pci_write_config_byte(chip->pdev, O2_SD_CLKREQ, scratch);
>
> @@ -843,7 +843,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> */
> ret = pci_read_config_byte(chip->pdev, O2_SD_CAPS, &scratch);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch |= 0x01;
> pci_write_config_byte(chip->pdev, O2_SD_CAPS, scratch);
> pci_write_config_byte(chip->pdev, O2_SD_CAPS, 0x73);
> @@ -856,7 +856,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_byte(chip->pdev,
> O2_SD_INF_MOD, &scratch);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch |= 0x08;
> pci_write_config_byte(chip->pdev, O2_SD_INF_MOD, scratch);
>
> @@ -864,7 +864,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_byte(chip->pdev,
> O2_SD_LOCK_WP, &scratch);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch |= 0x80;
> pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
> break;
> @@ -875,7 +875,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_byte(chip->pdev,
> O2_SD_LOCK_WP, &scratch);
> if (ret)
> - return ret;
> + goto read_fail;
>
> scratch &= 0x7f;
> pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
> @@ -886,7 +886,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> O2_SD_FUNC_REG0,
> &scratch_32);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch_32 = ((scratch_32 & 0xFF000000) >> 24);
>
> /* Check Whether subId is 0x11 or 0x12 */
> @@ -898,7 +898,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> O2_SD_FUNC_REG4,
> &scratch_32);
> if (ret)
> - return ret;
> + goto read_fail;
>
> /* Enable Base Clk setting change */
> scratch_32 |= O2_SD_FREG4_ENABLE_CLK_SET;
> @@ -921,7 +921,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_dword(chip->pdev,
> O2_SD_CLK_SETTING, &scratch_32);
> if (ret)
> - return ret;
> + goto read_fail;
>
> scratch_32 &= ~(0xFF00);
> scratch_32 |= 0x07E0C800;
> @@ -931,14 +931,14 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_dword(chip->pdev,
> O2_SD_CLKREQ, &scratch_32);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch_32 |= 0x3;
> pci_write_config_dword(chip->pdev, O2_SD_CLKREQ, scratch_32);
>
> ret = pci_read_config_dword(chip->pdev,
> O2_SD_PLL_SETTING, &scratch_32);
> if (ret)
> - return ret;
> + goto read_fail;
>
> scratch_32 &= ~(0x1F3F070E);
> scratch_32 |= 0x18270106;
> @@ -949,7 +949,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_dword(chip->pdev,
> O2_SD_CAP_REG2, &scratch_32);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch_32 &= ~(0xE0);
> pci_write_config_dword(chip->pdev,
> O2_SD_CAP_REG2, scratch_32);
> @@ -961,7 +961,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_byte(chip->pdev,
> O2_SD_LOCK_WP, &scratch);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch |= 0x80;
> pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
> break;
> @@ -971,7 +971,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_byte(chip->pdev,
> O2_SD_LOCK_WP, &scratch);
> if (ret)
> - return ret;
> + goto read_fail;
>
> scratch &= 0x7f;
> pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
> @@ -979,7 +979,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_dword(chip->pdev,
> O2_SD_PLL_SETTING, &scratch_32);
> if (ret)
> - return ret;
> + goto read_fail;
>
> if ((scratch_32 & 0xff000000) == 0x01000000) {
> scratch_32 &= 0x0000FFFF;
> @@ -998,7 +998,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> O2_SD_FUNC_REG4,
> &scratch_32);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch_32 |= (1 << 22);
> pci_write_config_dword(chip->pdev,
> O2_SD_FUNC_REG4, scratch_32);
> @@ -1017,7 +1017,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> ret = pci_read_config_byte(chip->pdev,
> O2_SD_LOCK_WP, &scratch);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch |= 0x80;
> pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
> break;
> @@ -1028,7 +1028,7 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> /* UnLock WP */
> ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch &= 0x7f;
> pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
>
> @@ -1057,13 +1057,16 @@ static int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
> /* Lock WP */
> ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch);
> if (ret)
> - return ret;
> + goto read_fail;
> scratch |= 0x80;
> pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
> break;
> }
>
> return 0;
> +
> +read_fail:
> + return pcibios_err_to_errno(ret);
> }
>
> #ifdef CONFIG_PM_SLEEP

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Previous message: Adrian Hunter: "Re: [PATCH 1/2] mmc: sdhci-pci: Convert PCIBIOS_* return codes to errnos"
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