| Message ID | 1516206496-16612-10-git-send-email-yamada.masahiro@socionext.com |
|---|---|
| State | New |
| Headers | show |
| Series | None | expand |
On Thu, Jan 18, 2018 at 01:28:09AM +0900, Masahiro Yamada wrote: > TMIO_MMC_WRPROTECT_DISABLE is equivalent to MMC_CAP2_NO_WRITE_PROTECT. > > Only the difference is the TMIO_... makes tmio_mmc_get_ro() return 0 > (i.e. it does not affect mmc_gpio_get_ro() at all), while MMC_CAP2_... > returns 0 before calling ->get_ro() hook (i.e. it affects both IP own > logic and GPIO detection). > > The TMIO MMC drivers do not set-up gpio_ro by themselves. Only the > possibility, if any, would be DT specifies "wp-gpios" property, and > gpio_ro is set by mmc_gpiod_request_ro() called from mmc_of_parse(). > However, it does not make sense to specify "wp-gpios" property and > "toshiba,mmc-wrprotect-disable" at the same time. > > I checked under arch/arm/boot/dts/ and arch/arm64/boot/dts/renesas/, > and I did not see any Renesas boards with "wp-gpios". So, this > conversion should be safe. > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> > static void tmio_mmc_of_parse(struct platform_device *pdev, > - struct tmio_mmc_data *pdata) > + struct mmc_host *mmc) I like how this cleanups improves things in various parts of the code, like here. Nice!
diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c index 0032707..bdbff2d 100644 --- a/drivers/mmc/host/tmio_mmc_core.c +++ b/drivers/mmc/host/tmio_mmc_core.c @@ -1128,7 +1128,7 @@ static int tmio_mmc_init_ocr(struct tmio_mmc_host *host) } static void tmio_mmc_of_parse(struct platform_device *pdev, - struct tmio_mmc_data *pdata) + struct mmc_host *mmc) { const struct device_node *np = pdev->dev.of_node; @@ -1136,7 +1136,7 @@ static void tmio_mmc_of_parse(struct platform_device *pdev, return; if (of_get_property(np, "toshiba,mmc-wrprotect-disable", NULL)) - pdata->flags |= TMIO_MMC_WRPROTECT_DISABLE; + mmc->caps2 |= MMC_CAP2_NO_WRITE_PROTECT; } struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev, @@ -1171,7 +1171,7 @@ struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev, goto free; } - tmio_mmc_of_parse(pdev, pdata); + tmio_mmc_of_parse(pdev, mmc); platform_set_drvdata(pdev, host);
TMIO_MMC_WRPROTECT_DISABLE is equivalent to MMC_CAP2_NO_WRITE_PROTECT. Only the difference is the TMIO_... makes tmio_mmc_get_ro() return 0 (i.e. it does not affect mmc_gpio_get_ro() at all), while MMC_CAP2_... returns 0 before calling ->get_ro() hook (i.e. it affects both IP own logic and GPIO detection). The TMIO MMC drivers do not set-up gpio_ro by themselves. Only the possibility, if any, would be DT specifies "wp-gpios" property, and gpio_ro is set by mmc_gpiod_request_ro() called from mmc_of_parse(). However, it does not make sense to specify "wp-gpios" property and "toshiba,mmc-wrprotect-disable" at the same time. I checked under arch/arm/boot/dts/ and arch/arm64/boot/dts/renesas/, and I did not see any Renesas boards with "wp-gpios". So, this conversion should be safe. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> --- Changes in v3: - newly added Changes in v2: None drivers/mmc/host/tmio_mmc_core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html