kernel: Copy patches from kernel 4.14 to 4.19

This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 149 insertions, 0 deletions

diff --git a/target/linux/generic/pending-4.19/834-ledtrig-libata.patch b/target/linux/generic/pending-4.19/834-ledtrig-libata.patch
new file mode 100644
index 0000000000..2eec024b72
--- /dev/null
+++ b/target/linux/generic/pending-4.19/834-ledtrig-libata.patch
@@ -0,0 +1,149 @@
+From: Daniel Golle <daniel@makrotopia.org>
+Subject: libata: add ledtrig support
+
+This adds a LED trigger for each ATA port indicating disk activity.
+
+As this is needed only on specific platforms (NAS SoCs and such),
+these platforms should define ARCH_WANTS_LIBATA_LEDS if there
+are boards with LED(s) intended to indicate ATA disk activity and
+need the OS to take care of that.
+In that way, if not selected, LED trigger support not will be
+included in libata-core and both, codepaths and structures remain
+untouched.
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+---
+ drivers/ata/Kconfig       | 16 ++++++++++++++++
+ drivers/ata/libata-core.c | 41 +++++++++++++++++++++++++++++++++++++++++
+ include/linux/libata.h    |  9 +++++++++
+ 3 files changed, 66 insertions(+)
+
+--- a/drivers/ata/Kconfig
++++ b/drivers/ata/Kconfig
+@@ -46,6 +46,22 @@ config ATA_VERBOSE_ERROR
+ 
+ 	  If unsure, say Y.
+ 
++config ARCH_WANT_LIBATA_LEDS
++	bool
++
++config ATA_LEDS
++	bool "support ATA port LED triggers"
++	depends on ARCH_WANT_LIBATA_LEDS
++	select NEW_LEDS
++	select LEDS_CLASS
++	select LEDS_TRIGGERS
++	default y
++	help
++	  This option adds a LED trigger for each registered ATA port.
++	  It is used to drive disk activity leds connected via GPIO.
++
++	  If unsure, say N.
++
+ config ATA_ACPI
+ 	bool "ATA ACPI Support"
+ 	depends on ACPI
+--- a/drivers/ata/libata-core.c
++++ b/drivers/ata/libata-core.c
+@@ -731,6 +731,19 @@ u64 ata_tf_read_block(const struct ata_t
+ 	return block;
+ }
+ 
++#ifdef CONFIG_ATA_LEDS
++#define LIBATA_BLINK_DELAY 20 /* ms */
++static inline void ata_led_act(struct ata_port *ap)
++{
++	unsigned long led_delay = LIBATA_BLINK_DELAY;
++
++	if (unlikely(!ap->ledtrig))
++		return;
++
++	led_trigger_blink_oneshot(ap->ledtrig, &led_delay, &led_delay, 0);
++}
++#endif
++
+ /**
+  *	ata_build_rw_tf - Build ATA taskfile for given read/write request
+  *	@tf: Target ATA taskfile
+@@ -5120,6 +5133,9 @@ struct ata_queued_cmd *ata_qc_new_init(s
+ 		if (tag < 0)
+ 			return NULL;
+ 	}
++#ifdef CONFIG_ATA_LEDS
++	ata_led_act(ap);
++#endif
+ 
+ 	qc = __ata_qc_from_tag(ap, tag);
+ 	qc->tag = tag;
+@@ -6021,6 +6037,9 @@ struct ata_port *ata_port_alloc(struct a
+ 	ap->stats.unhandled_irq = 1;
+ 	ap->stats.idle_irq = 1;
+ #endif
++#ifdef CONFIG_ATA_LEDS
++	ap->ledtrig = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
++#endif
+ 	ata_sff_port_init(ap);
+ 
+ 	return ap;
+@@ -6042,6 +6061,12 @@ static void ata_host_release(struct devi
+ 
+ 		kfree(ap->pmp_link);
+ 		kfree(ap->slave_link);
++#ifdef CONFIG_ATA_LEDS
++		if (ap->ledtrig) {
++			led_trigger_unregister(ap->ledtrig);
++			kfree(ap->ledtrig);
++		};
++#endif
+ 		kfree(ap);
+ 		host->ports[i] = NULL;
+ 	}
+@@ -6488,7 +6513,23 @@ int ata_host_register(struct ata_host *h
+ 		host->ports[i]->print_id = atomic_inc_return(&ata_print_id);
+ 		host->ports[i]->local_port_no = i + 1;
+ 	}
++#ifdef CONFIG_ATA_LEDS
++	for (i = 0; i < host->n_ports; i++) {
++		if (unlikely(!host->ports[i]->ledtrig))
++			continue;
+ 
++		snprintf(host->ports[i]->ledtrig_name,
++			sizeof(host->ports[i]->ledtrig_name), "ata%u",
++			host->ports[i]->print_id);
++
++		host->ports[i]->ledtrig->name = host->ports[i]->ledtrig_name;
++
++		if (led_trigger_register(host->ports[i]->ledtrig)) {
++			kfree(host->ports[i]->ledtrig);
++			host->ports[i]->ledtrig = NULL;
++		}
++	}
++#endif
+ 	/* Create associated sysfs transport objects  */
+ 	for (i = 0; i < host->n_ports; i++) {
+ 		rc = ata_tport_add(host->dev,host->ports[i]);
+--- a/include/linux/libata.h
++++ b/include/linux/libata.h
+@@ -38,6 +38,9 @@
+ #include <linux/acpi.h>
+ #include <linux/cdrom.h>
+ #include <linux/sched.h>
++#ifdef CONFIG_ATA_LEDS
++#include <linux/leds.h>
++#endif
+ 
+ /*
+  * Define if arch has non-standard setup.  This is a _PCI_ standard
+@@ -890,6 +893,12 @@ struct ata_port {
+ #ifdef CONFIG_ATA_ACPI
+ 	struct ata_acpi_gtm	__acpi_init_gtm; /* use ata_acpi_init_gtm() */
+ #endif
++
++#ifdef CONFIG_ATA_LEDS
++	struct led_trigger	*ledtrig;
++	char			ledtrig_name[8];
++#endif
++
+ 	/* owned by EH */
+ 	u8			sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
+ };