The patch below was submitted to be applied to the 4.12-stable tree.
I fail to see how this patch meets the stable kernel rules as found at
Documentation/process/stable_kernel_rules.rst.
I could be totally wrong, and if so, please respond to
<stable@xxxxxxxxxxxxxxx> and let me know why this patch should be
applied. Otherwise, it is now dropped from my patch queues, never to be
seen again.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 73a47a9bb3e2c4a9c553c72456e63ab991b1a4d9 Mon Sep 17 00:00:00 2001
From: David Woods <dwoods@xxxxxxxxxxxx>
Date: Fri, 26 May 2017 17:53:21 -0400
Subject: [PATCH] mmc: core: Use device_property_read instead of
of_property_read
Using the device_property interfaces allows mmc drivers to work
on platforms which run on either device tree or ACPI.
Signed-off-by: David Woods <dwoods@xxxxxxxxxxxx>
Reviewed-by: Chris Metcalf <cmetcalf@xxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 8823c97a7b38..1503412f826c 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -177,19 +177,17 @@ static void mmc_retune_timer(unsigned long data)
*/
int mmc_of_parse(struct mmc_host *host)
{
- struct device_node *np;
+ struct device *dev = host->parent;
u32 bus_width;
int ret;
bool cd_cap_invert, cd_gpio_invert = false;
bool ro_cap_invert, ro_gpio_invert = false;
- if (!host->parent || !host->parent->of_node)
+ if (!dev || !dev_fwnode(dev))
return 0;
- np = host->parent->of_node;
-
/* "bus-width" is translated to MMC_CAP_*_BIT_DATA flags */
- if (of_property_read_u32(np, "bus-width", &bus_width) < 0) {
+ if (device_property_read_u32(dev, "bus-width", &bus_width) < 0) {
dev_dbg(host->parent,
"\"bus-width\" property is missing, assuming 1 bit.\n");
bus_width = 1;
@@ -211,7 +209,7 @@ int mmc_of_parse(struct mmc_host *host)
}
/* f_max is obtained from the optional "max-frequency" property */
- of_property_read_u32(np, "max-frequency", &host->f_max);
+ device_property_read_u32(dev, "max-frequency", &host->f_max);
/*
* Configure CD and WP pins. They are both by default active low to
@@ -226,12 +224,12 @@ int mmc_of_parse(struct mmc_host *host)
*/
/* Parse Card Detection */
- if (of_property_read_bool(np, "non-removable")) {
+ if (device_property_read_bool(dev, "non-removable")) {
host->caps |= MMC_CAP_NONREMOVABLE;
} else {
- cd_cap_invert = of_property_read_bool(np, "cd-inverted");
+ cd_cap_invert = device_property_read_bool(dev, "cd-inverted");
- if (of_property_read_bool(np, "broken-cd"))
+ if (device_property_read_bool(dev, "broken-cd"))
host->caps |= MMC_CAP_NEEDS_POLL;
ret = mmc_gpiod_request_cd(host, "cd", 0, true,
@@ -257,7 +255,7 @@ int mmc_of_parse(struct mmc_host *host)
}
/* Parse Write Protection */
- ro_cap_invert = of_property_read_bool(np, "wp-inverted");
+ ro_cap_invert = device_property_read_bool(dev, "wp-inverted");
ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &ro_gpio_invert);
if (!ret)
@@ -265,64 +263,64 @@ int mmc_of_parse(struct mmc_host *host)
else if (ret != -ENOENT && ret != -ENOSYS)
return ret;
- if (of_property_read_bool(np, "disable-wp"))
+ if (device_property_read_bool(dev, "disable-wp"))
host->caps2 |= MMC_CAP2_NO_WRITE_PROTECT;
/* See the comment on CD inversion above */
if (ro_cap_invert ^ ro_gpio_invert)
host->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
- if (of_property_read_bool(np, "cap-sd-highspeed"))
+ if (device_property_read_bool(dev, "cap-sd-highspeed"))
host->caps |= MMC_CAP_SD_HIGHSPEED;
- if (of_property_read_bool(np, "cap-mmc-highspeed"))
+ if (device_property_read_bool(dev, "cap-mmc-highspeed"))
host->caps |= MMC_CAP_MMC_HIGHSPEED;
- if (of_property_read_bool(np, "sd-uhs-sdr12"))
+ if (device_property_read_bool(dev, "sd-uhs-sdr12"))
host->caps |= MMC_CAP_UHS_SDR12;
- if (of_property_read_bool(np, "sd-uhs-sdr25"))
+ if (device_property_read_bool(dev, "sd-uhs-sdr25"))
host->caps |= MMC_CAP_UHS_SDR25;
- if (of_property_read_bool(np, "sd-uhs-sdr50"))
+ if (device_property_read_bool(dev, "sd-uhs-sdr50"))
host->caps |= MMC_CAP_UHS_SDR50;
- if (of_property_read_bool(np, "sd-uhs-sdr104"))
+ if (device_property_read_bool(dev, "sd-uhs-sdr104"))
host->caps |= MMC_CAP_UHS_SDR104;
- if (of_property_read_bool(np, "sd-uhs-ddr50"))
+ if (device_property_read_bool(dev, "sd-uhs-ddr50"))
host->caps |= MMC_CAP_UHS_DDR50;
- if (of_property_read_bool(np, "cap-power-off-card"))
+ if (device_property_read_bool(dev, "cap-power-off-card"))
host->caps |= MMC_CAP_POWER_OFF_CARD;
- if (of_property_read_bool(np, "cap-mmc-hw-reset"))
+ if (device_property_read_bool(dev, "cap-mmc-hw-reset"))
host->caps |= MMC_CAP_HW_RESET;
- if (of_property_read_bool(np, "cap-sdio-irq"))
+ if (device_property_read_bool(dev, "cap-sdio-irq"))
host->caps |= MMC_CAP_SDIO_IRQ;
- if (of_property_read_bool(np, "full-pwr-cycle"))
+ if (device_property_read_bool(dev, "full-pwr-cycle"))
host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE;
- if (of_property_read_bool(np, "keep-power-in-suspend"))
+ if (device_property_read_bool(dev, "keep-power-in-suspend"))
host->pm_caps |= MMC_PM_KEEP_POWER;
- if (of_property_read_bool(np, "wakeup-source") ||
- of_property_read_bool(np, "enable-sdio-wakeup")) /* legacy */
+ if (device_property_read_bool(dev, "wakeup-source") ||
+ device_property_read_bool(dev, "enable-sdio-wakeup")) /* legacy */
host->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
- if (of_property_read_bool(np, "mmc-ddr-3_3v"))
+ if (device_property_read_bool(dev, "mmc-ddr-3_3v"))
host->caps |= MMC_CAP_3_3V_DDR;
- if (of_property_read_bool(np, "mmc-ddr-1_8v"))
+ if (device_property_read_bool(dev, "mmc-ddr-1_8v"))
host->caps |= MMC_CAP_1_8V_DDR;
- if (of_property_read_bool(np, "mmc-ddr-1_2v"))
+ if (device_property_read_bool(dev, "mmc-ddr-1_2v"))
host->caps |= MMC_CAP_1_2V_DDR;
- if (of_property_read_bool(np, "mmc-hs200-1_8v"))
+ if (device_property_read_bool(dev, "mmc-hs200-1_8v"))
host->caps2 |= MMC_CAP2_HS200_1_8V_SDR;
- if (of_property_read_bool(np, "mmc-hs200-1_2v"))
+ if (device_property_read_bool(dev, "mmc-hs200-1_2v"))
host->caps2 |= MMC_CAP2_HS200_1_2V_SDR;
- if (of_property_read_bool(np, "mmc-hs400-1_8v"))
+ if (device_property_read_bool(dev, "mmc-hs400-1_8v"))
host->caps2 |= MMC_CAP2_HS400_1_8V | MMC_CAP2_HS200_1_8V_SDR;
- if (of_property_read_bool(np, "mmc-hs400-1_2v"))
+ if (device_property_read_bool(dev, "mmc-hs400-1_2v"))
host->caps2 |= MMC_CAP2_HS400_1_2V | MMC_CAP2_HS200_1_2V_SDR;
- if (of_property_read_bool(np, "mmc-hs400-enhanced-strobe"))
+ if (device_property_read_bool(dev, "mmc-hs400-enhanced-strobe"))
host->caps2 |= MMC_CAP2_HS400_ES;
- if (of_property_read_bool(np, "no-sdio"))
+ if (device_property_read_bool(dev, "no-sdio"))
host->caps2 |= MMC_CAP2_NO_SDIO;
- if (of_property_read_bool(np, "no-sd"))
+ if (device_property_read_bool(dev, "no-sd"))
host->caps2 |= MMC_CAP2_NO_SD;
- if (of_property_read_bool(np, "no-mmc"))
+ if (device_property_read_bool(dev, "no-mmc"))
host->caps2 |= MMC_CAP2_NO_MMC;
- host->dsr_req = !of_property_read_u32(np, "dsr", &host->dsr);
+ host->dsr_req = !device_property_read_u32(dev, "dsr", &host->dsr);
if (host->dsr_req && (host->dsr & ~0xffff)) {
dev_err(host->parent,
"device tree specified broken value for DSR: 0x%x, ignoring\n",