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authorLinus Torvalds <torvalds@linux-foundation.org>2021-03-11 00:15:16 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-03-11 00:15:16 +0300
commita74e6a014c9d4d4161061f770c9b4f98372ac778 (patch)
tree3f7ea3245c5617f9f60fa2b08accd1f7d0efdbaa /drivers
parent9b1ea29bc0d7b94d420f96a0f4121403efc3dd85 (diff)
parent78c7cccaab9d5f9ead44579d79dd7d13a05aec7e (diff)
downloadlinux-a74e6a014c9d4d4161061f770c9b4f98372ac778.tar.xz
Merge tag 's390-5.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Heiko Carstens: - fix various user space visible copy_to_user() instances which return the number of bytes left to copy instead of -EFAULT - make TMPFS_INODE64 available again for s390 and alpha, now that both architectures have been switched to 64-bit ino_t (see commit 96c0a6a72d18: "s390,alpha: switch to 64-bit ino_t") - make sure to release a shared hypervisor resource within the zcore device driver also on restart and power down; also remove unneeded surrounding debugfs_create return value checks - for the new hardware counter set device driver rename the uapi header file to be a bit more generic; also remove 60 second read limit which is not really necessary and without the limit the interface can be easier tested - some small cleanups, the largest being to convert all long long in our time and idle code to longs - update defconfigs * tag 's390-5.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390: remove IBM_PARTITION and CONFIGFS_FS from zfcpdump defconfig s390: update defconfigs s390,alpha: make TMPFS_INODE64 available again s390/cio: return -EFAULT if copy_to_user() fails s390/tty3270: avoid comma separated statements s390/cpumf: remove unneeded semicolon s390/crypto: return -EFAULT if copy_to_user() fails s390/cio: return -EFAULT if copy_to_user() fails s390/cpumf: rename header file to hwctrset.h s390/zcore: release dump save area on restart or power down s390/zcore: no need to check return value of debugfs_create functions s390/cpumf: remove 60 seconds read limit s390/topology: remove always false if check s390/time,idle: get rid of unsigned long long
Diffstat (limited to 'drivers')
-rw-r--r--drivers/s390/char/tty3270.c6
-rw-r--r--drivers/s390/char/zcore.c44
-rw-r--r--drivers/s390/cio/device_fsm.c2
-rw-r--r--drivers/s390/cio/vfio_ccw_ops.c6
-rw-r--r--drivers/s390/crypto/vfio_ap_ops.c2
5 files changed, 36 insertions, 24 deletions
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index 15692449a1c3..307a80f85c07 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -424,8 +424,10 @@ tty3270_update(struct timer_list *t)
* last output position matches the start address
* of this line.
*/
- if (s->string[1] == sba[0] && s->string[2] == sba[1])
- str += 3, len -= 3;
+ if (s->string[1] == sba[0] && s->string[2] == sba[1]) {
+ str += 3;
+ len -= 3;
+ }
if (raw3270_request_add_data(wrq, str, len) != 0)
break;
list_del_init(&s->update);
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index 1515fdc3c1ab..bd3c724bf695 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -15,6 +15,7 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/debugfs.h>
+#include <linux/reboot.h>
#include <asm/asm-offsets.h>
#include <asm/ipl.h>
@@ -238,6 +239,28 @@ static int __init zcore_reipl_init(void)
return 0;
}
+static int zcore_reboot_and_on_panic_handler(struct notifier_block *self,
+ unsigned long event,
+ void *data)
+{
+ if (hsa_available)
+ release_hsa();
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block zcore_reboot_notifier = {
+ .notifier_call = zcore_reboot_and_on_panic_handler,
+ /* we need to be notified before reipl and kdump */
+ .priority = INT_MAX,
+};
+
+static struct notifier_block zcore_on_panic_notifier = {
+ .notifier_call = zcore_reboot_and_on_panic_handler,
+ /* we need to be notified before reipl and kdump */
+ .priority = INT_MAX,
+};
+
static int __init zcore_init(void)
{
unsigned char arch;
@@ -293,28 +316,15 @@ static int __init zcore_init(void)
goto fail;
zcore_dir = debugfs_create_dir("zcore" , NULL);
- if (!zcore_dir) {
- rc = -ENOMEM;
- goto fail;
- }
zcore_reipl_file = debugfs_create_file("reipl", S_IRUSR, zcore_dir,
NULL, &zcore_reipl_fops);
- if (!zcore_reipl_file) {
- rc = -ENOMEM;
- goto fail_dir;
- }
zcore_hsa_file = debugfs_create_file("hsa", S_IRUSR|S_IWUSR, zcore_dir,
NULL, &zcore_hsa_fops);
- if (!zcore_hsa_file) {
- rc = -ENOMEM;
- goto fail_reipl_file;
- }
- return 0;
-fail_reipl_file:
- debugfs_remove(zcore_reipl_file);
-fail_dir:
- debugfs_remove(zcore_dir);
+ register_reboot_notifier(&zcore_reboot_notifier);
+ atomic_notifier_chain_register(&panic_notifier_list, &zcore_on_panic_notifier);
+
+ return 0;
fail:
diag308(DIAG308_REL_HSA, NULL);
return rc;
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 6420b197bb05..05e136cfb8be 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -47,7 +47,7 @@ static void ccw_timeout_log(struct ccw_device *cdev)
orb = &private->orb;
cc = stsch(sch->schid, &schib);
- printk(KERN_WARNING "cio: ccw device timeout occurred at %llx, "
+ printk(KERN_WARNING "cio: ccw device timeout occurred at %lx, "
"device information:\n", get_tod_clock());
printk(KERN_WARNING "cio: orb:\n");
print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1,
diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c
index 68106be4ba7a..767ac41686fe 100644
--- a/drivers/s390/cio/vfio_ccw_ops.c
+++ b/drivers/s390/cio/vfio_ccw_ops.c
@@ -543,7 +543,7 @@ static ssize_t vfio_ccw_mdev_ioctl(struct mdev_device *mdev,
if (ret)
return ret;
- return copy_to_user((void __user *)arg, &info, minsz);
+ return copy_to_user((void __user *)arg, &info, minsz) ? -EFAULT : 0;
}
case VFIO_DEVICE_GET_REGION_INFO:
{
@@ -561,7 +561,7 @@ static ssize_t vfio_ccw_mdev_ioctl(struct mdev_device *mdev,
if (ret)
return ret;
- return copy_to_user((void __user *)arg, &info, minsz);
+ return copy_to_user((void __user *)arg, &info, minsz) ? -EFAULT : 0;
}
case VFIO_DEVICE_GET_IRQ_INFO:
{
@@ -582,7 +582,7 @@ static ssize_t vfio_ccw_mdev_ioctl(struct mdev_device *mdev,
if (info.count == -1)
return -EINVAL;
- return copy_to_user((void __user *)arg, &info, minsz);
+ return copy_to_user((void __user *)arg, &info, minsz) ? -EFAULT : 0;
}
case VFIO_DEVICE_SET_IRQS:
{
diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c
index 41fc2e4135fe..1ffdd411201c 100644
--- a/drivers/s390/crypto/vfio_ap_ops.c
+++ b/drivers/s390/crypto/vfio_ap_ops.c
@@ -1286,7 +1286,7 @@ static int vfio_ap_mdev_get_device_info(unsigned long arg)
info.num_regions = 0;
info.num_irqs = 0;
- return copy_to_user((void __user *)arg, &info, minsz);
+ return copy_to_user((void __user *)arg, &info, minsz) ? -EFAULT : 0;
}
static ssize_t vfio_ap_mdev_ioctl(struct mdev_device *mdev,