Linux-libre 4.2-gnu

9 files changed, 18 insertions, 171 deletions

diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig
index 8902f9b4d..2509d057b 100644
--- a/drivers/tty/hvc/Kconfig
+++ b/drivers/tty/hvc/Kconfig
@@ -42,13 +42,6 @@ config HVC_RTAS
 	help
 	  IBM Console device driver which makes use of RTAS
 
-config HVC_BEAT
-	bool "Toshiba's Beat Hypervisor Console support"
-	depends on PPC_CELLEB
-	select HVC_DRIVER
-	help
-	  Toshiba's Cell Reference Set Beat Console device driver
-
 config HVC_IUCV
 	bool "z/VM IUCV Hypervisor console support (VM only)"
 	depends on S390
diff --git a/drivers/tty/hvc/Makefile b/drivers/tty/hvc/Makefile
index 4ca3723b0..6a2702be7 100644
--- a/drivers/tty/hvc/Makefile
+++ b/drivers/tty/hvc/Makefile
@@ -4,7 +4,6 @@ obj-$(CONFIG_HVC_OLD_HVSI)	+= hvsi.o
 obj-$(CONFIG_HVC_RTAS)		+= hvc_rtas.o
 obj-$(CONFIG_HVC_TILE)		+= hvc_tile.o
 obj-$(CONFIG_HVC_DCC)		+= hvc_dcc.o
-obj-$(CONFIG_HVC_BEAT)		+= hvc_beat.o
 obj-$(CONFIG_HVC_DRIVER)	+= hvc_console.o
 obj-$(CONFIG_HVC_IRQ)		+= hvc_irq.o
 obj-$(CONFIG_HVC_XEN)		+= hvc_xen.o
diff --git a/drivers/tty/hvc/hvc_beat.c b/drivers/tty/hvc/hvc_beat.c
deleted file mode 100644
index 1560d2354..000000000
--- a/drivers/tty/hvc/hvc_beat.c
+++ /dev/null
@@ -1,134 +0,0 @@
-/*
- * Beat hypervisor console driver
- *
- * (C) Copyright 2006 TOSHIBA CORPORATION
- *
- * This code is based on drivers/char/hvc_rtas.c:
- * (C) Copyright IBM Corporation 2001-2005
- * (C) Copyright Red Hat, Inc. 2005
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/string.h>
-#include <linux/console.h>
-#include <asm/prom.h>
-#include <asm/hvconsole.h>
-#include <asm/firmware.h>
-
-#include "hvc_console.h"
-
-extern int64_t beat_get_term_char(uint64_t, uint64_t *, uint64_t *, uint64_t *);
-extern int64_t beat_put_term_char(uint64_t, uint64_t, uint64_t, uint64_t);
-
-struct hvc_struct *hvc_beat_dev = NULL;
-
-/* bug: only one queue is available regardless of vtermno */
-static int hvc_beat_get_chars(uint32_t vtermno, char *buf, int cnt)
-{
-	static unsigned char q[sizeof(unsigned long) * 2]
-		__attribute__((aligned(sizeof(unsigned long))));
-	static int qlen = 0;
-	u64 got;
-
-again:
-	if (qlen) {
-		if (qlen > cnt) {
-			memcpy(buf, q, cnt);
-			qlen -= cnt;
-			memmove(q + cnt, q, qlen);
-			return cnt;
-		} else {	/* qlen <= cnt */
-			int	r;
-
-			memcpy(buf, q, qlen);
-			r = qlen;
-			qlen = 0;
-			return r;
-		}
-	}
-	if (beat_get_term_char(vtermno, &got,
-		((u64 *)q), ((u64 *)q) + 1) == 0) {
-		qlen = got;
-		goto again;
-	}
-	return 0;
-}
-
-static int hvc_beat_put_chars(uint32_t vtermno, const char *buf, int cnt)
-{
-	unsigned long kb[2];
-	int rest, nlen;
-
-	for (rest = cnt; rest > 0; rest -= nlen) {
-		nlen = (rest > 16) ? 16 : rest;
-		memcpy(kb, buf, nlen);
-		beat_put_term_char(vtermno, nlen, kb[0], kb[1]);
-		buf += nlen;
-	}
-	return cnt;
-}
-
-static const struct hv_ops hvc_beat_get_put_ops = {
-	.get_chars = hvc_beat_get_chars,
-	.put_chars = hvc_beat_put_chars,
-};
-
-static int hvc_beat_useit = 1;
-
-static int hvc_beat_config(char *p)
-{
-	hvc_beat_useit = simple_strtoul(p, NULL, 0);
-	return 0;
-}
-
-static int __init hvc_beat_console_init(void)
-{
-	if (hvc_beat_useit && of_machine_is_compatible("Beat")) {
-		hvc_instantiate(0, 0, &hvc_beat_get_put_ops);
-	}
-	return 0;
-}
-
-/* temp */
-static int __init hvc_beat_init(void)
-{
-	struct hvc_struct *hp;
-
-	if (!firmware_has_feature(FW_FEATURE_BEAT))
-		return -ENODEV;
-
-	hp = hvc_alloc(0, 0, &hvc_beat_get_put_ops, 16);
-	if (IS_ERR(hp))
-		return PTR_ERR(hp);
-	hvc_beat_dev = hp;
-	return 0;
-}
-
-static void __exit hvc_beat_exit(void)
-{
-	if (hvc_beat_dev)
-		hvc_remove(hvc_beat_dev);
-}
-
-module_init(hvc_beat_init);
-module_exit(hvc_beat_exit);
-
-__setup("hvc_beat=", hvc_beat_config);
-
-console_initcall(hvc_beat_console_init);
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 4fcec1d79..4e9c4cc9e 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -319,7 +319,8 @@ static int hvc_install(struct tty_driver *driver, struct tty_struct *tty)
 	int rc;
 
 	/* Auto increments kref reference if found. */
-	if (!(hp = hvc_get_by_index(tty->index)))
+	hp = hvc_get_by_index(tty->index);
+	if (!hp)
 		return -ENODEV;
 
 	tty->driver_data = hp;
diff --git a/drivers/tty/hvc/hvc_iucv.c b/drivers/tty/hvc/hvc_iucv.c
index f78a87b07..bb809cf36 100644
--- a/drivers/tty/hvc/hvc_iucv.c
+++ b/drivers/tty/hvc/hvc_iucv.c
@@ -1345,7 +1345,7 @@ static int param_get_vmidfilter(char *buffer, const struct kernel_param *kp)
 
 #define param_check_vmidfilter(name, p) __param_check(name, p, void)
 
-static struct kernel_param_ops param_ops_vmidfilter = {
+static const struct kernel_param_ops param_ops_vmidfilter = {
 	.set = param_set_vmidfilter,
 	.get = param_get_vmidfilter,
 };
diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
index 543b234e7..47b54c6ae 100644
--- a/drivers/tty/hvc/hvc_opal.c
+++ b/drivers/tty/hvc/hvc_opal.c
@@ -29,6 +29,7 @@
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/export.h>
+#include <linux/interrupt.h>
 
 #include <asm/hvconsole.h>
 #include <asm/prom.h>
@@ -61,7 +62,6 @@ static struct hvc_opal_priv *hvc_opal_privs[MAX_NR_HVC_CONSOLES];
 /* For early boot console */
 static struct hvc_opal_priv hvc_opal_boot_priv;
 static u32 hvc_opal_boot_termno;
-static bool hvc_opal_event_registered;
 
 static const struct hv_ops hvc_opal_raw_ops = {
 	.get_chars = opal_get_chars,
@@ -162,28 +162,15 @@ static const struct hv_ops hvc_opal_hvsi_ops = {
 	.tiocmset = hvc_opal_hvsi_tiocmset,
 };
 
-static int hvc_opal_console_event(struct notifier_block *nb,
-				  unsigned long events, void *change)
-{
-	if (events & OPAL_EVENT_CONSOLE_INPUT)
-		hvc_kick();
-	return 0;
-}
-
-static struct notifier_block hvc_opal_console_nb = {
-	.notifier_call	= hvc_opal_console_event,
-};
-
 static int hvc_opal_probe(struct platform_device *dev)
 {
 	const struct hv_ops *ops;
 	struct hvc_struct *hp;
 	struct hvc_opal_priv *pv;
 	hv_protocol_t proto;
-	unsigned int termno, boot = 0;
+	unsigned int termno, irq, boot = 0;
 	const __be32 *reg;
 
-
 	if (of_device_is_compatible(dev->dev.of_node, "ibm,opal-console-raw")) {
 		proto = HV_PROTOCOL_RAW;
 		ops = &hvc_opal_raw_ops;
@@ -227,18 +214,18 @@ static int hvc_opal_probe(struct platform_device *dev)
 		dev->dev.of_node->full_name,
 		boot ? " (boot console)" : "");
 
-	/* We don't do IRQ ... */
-	hp = hvc_alloc(termno, 0, ops, MAX_VIO_PUT_CHARS);
+	irq = opal_event_request(ilog2(OPAL_EVENT_CONSOLE_INPUT));
+	if (!irq) {
+		pr_err("hvc_opal: Unable to map interrupt for device %s\n",
+			dev->dev.of_node->full_name);
+		return irq;
+	}
+
+	hp = hvc_alloc(termno, irq, ops, MAX_VIO_PUT_CHARS);
 	if (IS_ERR(hp))
 		return PTR_ERR(hp);
 	dev_set_drvdata(&dev->dev, hp);
 
-	/* ...  but we use OPAL event to kick the console */
-	if (!hvc_opal_event_registered) {
-		opal_notifier_register(&hvc_opal_console_nb);
-		hvc_opal_event_registered = true;
-	}
-
 	return 0;
 }
 
diff --git a/drivers/tty/hvc/hvc_tile.c b/drivers/tty/hvc/hvc_tile.c
index 3f6cd3102..9da1e842b 100644
--- a/drivers/tty/hvc/hvc_tile.c
+++ b/drivers/tty/hvc/hvc_tile.c
@@ -51,7 +51,8 @@ int tile_console_write(const char *buf, int count)
 			      _SIM_CONTROL_OPERATOR_BITS));
 		return 0;
 	} else {
-		return hv_console_write((HV_VirtAddr)buf, count);
+		/* Translate 0 bytes written to EAGAIN for hvc_console_print. */
+		return hv_console_write((HV_VirtAddr)buf, count) ?: -EAGAIN;
 	}
 }
 
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index 7a3d146a5..a9d837f83 100644
--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -302,7 +302,7 @@ static int xen_initial_domain_console_init(void)
 static void xen_console_update_evtchn(struct xencons_info *info)
 {
 	if (xen_hvm_domain()) {
-		uint64_t v;
+		uint64_t v = 0;
 		int err;
 
 		err = hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN, &v);
diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c
index 81ff7e1bf..f7ff97c0a 100644
--- a/drivers/tty/hvc/hvcs.c
+++ b/drivers/tty/hvc/hvcs.c
@@ -1044,8 +1044,8 @@ static int hvcs_enable_device(struct hvcs_struct *hvcsd, uint32_t unit_address,
 	 * It is possible that the vty-server was removed between the time that
 	 * the conn was registered and now.
 	 */
-	if (!(rc = request_irq(irq, &hvcs_handle_interrupt,
-				0, "ibmhvcs", hvcsd))) {
+	rc = request_irq(irq, &hvcs_handle_interrupt, 0, "ibmhvcs", hvcsd);
+	if (!rc) {
 		/*
 		 * It is possible the vty-server was removed after the irq was
 		 * requested but before we have time to enable interrupts.