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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Browse Source 
Pull s390 fixes from Martin Schwidefsky:
 "Just a bunch of bugfixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/mm: provide emtpy check_pgt_cache() function
  s390/uaccess: fix page table walk
  s390/3270: fix minor_start issue
  s390/uaccess: fix clear_user_pt()
  s390/scm_blk: fix error return code in scm_blk_init()
  s390/scm_block: fix printk format string
  drivers/Kconfig: add several missing GENERIC_HARDIRQS dependencies
This commit is contained in:
Linus Torvalds 2013-04-03 10:48:22 -07:00
commit 17eb3d8fbe
8 changed files with 81 additions and 45 deletions
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4
arch/s390/include/asm/pgtable.h
View File

@ -344,6 +344,7 @@ extern unsigned long MODULES_END;
#define _REGION3_ENTRY_CO 0x100 /* change-recording override */
/* Bits in the segment table entry */
#define _SEGMENT_ENTRY_ORIGIN_LARGE ~0xfffffUL /* large page address */
#define _SEGMENT_ENTRY_ORIGIN ~0x7ffUL/* segment table origin */
#define _SEGMENT_ENTRY_RO 0x200 /* page protection bit */
#define _SEGMENT_ENTRY_INV 0x20 /* invalid segment table entry */
@ -1531,7 +1532,8 @@ extern int s390_enable_sie(void);
/*
* No page table caches to initialise
*/
#define pgtable_cache_init() do { } while (0)
static inline void pgtable_cache_init(void) { }
static inline void check_pgt_cache(void) { }
#include <asm-generic/pgtable.h>

79
arch/s390/lib/uaccess_pt.c
View File

@ -77,42 +77,69 @@ static size_t copy_in_kernel(size_t count, void __user *to,
* >= -4095 (IS_ERR_VALUE(x) returns true), a fault has occured and the address
* contains the (negative) exception code.
*/
static __always_inline unsigned long follow_table(struct mm_struct *mm,
unsigned long addr, int write)
#ifdef CONFIG_64BIT
static unsigned long follow_table(struct mm_struct *mm,
unsigned long address, int write)
{
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *ptep;
unsigned long *table = (unsigned long *)__pa(mm->pgd);
pgd = pgd_offset(mm, addr);
if (pgd_none(*pgd) || unlikely(pgd_bad(*pgd)))
switch (mm->context.asce_bits & _ASCE_TYPE_MASK) {
case _ASCE_TYPE_REGION1:
table = table + ((address >> 53) & 0x7ff);
if (unlikely(*table & _REGION_ENTRY_INV))
return -0x39UL;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
case _ASCE_TYPE_REGION2:
table = table + ((address >> 42) & 0x7ff);
if (unlikely(*table & _REGION_ENTRY_INV))
return -0x3aUL;
pud = pud_offset(pgd, addr);
if (pud_none(*pud) || unlikely(pud_bad(*pud)))
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
case _ASCE_TYPE_REGION3:
table = table + ((address >> 31) & 0x7ff);
if (unlikely(*table & _REGION_ENTRY_INV))
return -0x3bUL;
pmd = pmd_offset(pud, addr);
if (pmd_none(*pmd))
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
case _ASCE_TYPE_SEGMENT:
table = table + ((address >> 20) & 0x7ff);
if (unlikely(*table & _SEGMENT_ENTRY_INV))
return -0x10UL;
if (pmd_large(*pmd)) {
if (write && (pmd_val(*pmd) & _SEGMENT_ENTRY_RO))
if (unlikely(*table & _SEGMENT_ENTRY_LARGE)) {
if (write && (*table & _SEGMENT_ENTRY_RO))
return -0x04UL;
return (pmd_val(*pmd) & HPAGE_MASK) + (addr & ~HPAGE_MASK);
return (*table & _SEGMENT_ENTRY_ORIGIN_LARGE) +
(address & ~_SEGMENT_ENTRY_ORIGIN_LARGE);
}
if (unlikely(pmd_bad(*pmd)))
return -0x10UL;
ptep = pte_offset_map(pmd, addr);
if (!pte_present(*ptep))
table = (unsigned long *)(*table & _SEGMENT_ENTRY_ORIGIN);
}
table = table + ((address >> 12) & 0xff);
if (unlikely(*table & _PAGE_INVALID))
return -0x11UL;
if (write && (!pte_write(*ptep) || !pte_dirty(*ptep)))
if (write && (*table & _PAGE_RO))
return -0x04UL;
return (pte_val(*ptep) & PAGE_MASK) + (addr & ~PAGE_MASK);
return (*table & PAGE_MASK) + (address & ~PAGE_MASK);
}
#else /* CONFIG_64BIT */
static unsigned long follow_table(struct mm_struct *mm,
unsigned long address, int write)
{
unsigned long *table = (unsigned long *)__pa(mm->pgd);
table = table + ((address >> 20) & 0x7ff);
if (unlikely(*table & _SEGMENT_ENTRY_INV))
return -0x10UL;
table = (unsigned long *)(*table & _SEGMENT_ENTRY_ORIGIN);
table = table + ((address >> 12) & 0xff);
if (unlikely(*table & _PAGE_INVALID))
return -0x11UL;
if (write && (*table & _PAGE_RO))
return -0x04UL;
return (*table & PAGE_MASK) + (address & ~PAGE_MASK);
}
#endif /* CONFIG_64BIT */
static __always_inline size_t __user_copy_pt(unsigned long uaddr, void *kptr,
size_t n, int write_user)
{
@ -197,7 +224,7 @@ size_t copy_to_user_pt(size_t n, void __user *to, const void *from)
static size_t clear_user_pt(size_t n, void __user *to)
{
void *zpage = &empty_zero_page;
void *zpage = (void *) empty_zero_page;
long done, size, ret;
done = 0;

1
drivers/dma/Kconfig
View File

@ -83,6 +83,7 @@ config INTEL_IOP_ADMA
config DW_DMAC
tristate "Synopsys DesignWare AHB DMA support"
depends on GENERIC_HARDIRQS
select DMA_ENGINE
default y if CPU_AT32AP7000
help

2
drivers/media/platform/Kconfig
View File

@ -204,7 +204,7 @@ config VIDEO_SAMSUNG_EXYNOS_GSC
config VIDEO_SH_VEU
tristate "SuperH VEU mem2mem video processing driver"
depends on VIDEO_DEV && VIDEO_V4L2
depends on VIDEO_DEV && VIDEO_V4L2 && GENERIC_HARDIRQS
select VIDEOBUF2_DMA_CONTIG
select V4L2_MEM2MEM_DEV
help

11
drivers/s390/block/scm_blk.c
View File

@ -307,7 +307,7 @@ static void scm_blk_handle_error(struct scm_request *scmrq)
case EQC_WR_PROHIBIT:
spin_lock_irqsave(&bdev->lock, flags);
if (bdev->state != SCM_WR_PROHIBIT)
pr_info("%lu: Write access to the SCM increment is suspended\n",
pr_info("%lx: Write access to the SCM increment is suspended\n",
(unsigned long) bdev->scmdev->address);
bdev->state = SCM_WR_PROHIBIT;
spin_unlock_irqrestore(&bdev->lock, flags);
@ -445,7 +445,7 @@ void scm_blk_set_available(struct scm_blk_dev *bdev)
spin_lock_irqsave(&bdev->lock, flags);
if (bdev->state == SCM_WR_PROHIBIT)
pr_info("%lu: Write access to the SCM increment is restored\n",
pr_info("%lx: Write access to the SCM increment is restored\n",
(unsigned long) bdev->scmdev->address);
bdev->state = SCM_OPER;
spin_unlock_irqrestore(&bdev->lock, flags);
@ -463,12 +463,15 @@ static int __init scm_blk_init(void)
goto out;
scm_major = ret;
if (scm_alloc_rqs(nr_requests))
ret = scm_alloc_rqs(nr_requests);
if (ret)
goto out_unreg;
scm_debug = debug_register("scm_log", 16, 1, 16);
if (!scm_debug)
if (!scm_debug) {
ret = -ENOMEM;
goto out_free;
}
debug_register_view(scm_debug, &debug_hex_ascii_view);
debug_set_level(scm_debug, 2);

2
drivers/s390/block/scm_drv.c
View File

@ -19,7 +19,7 @@ static void scm_notify(struct scm_device *scmdev, enum scm_event event)
switch (event) {
case SCM_CHANGE:
pr_info("%lu: The capabilities of the SCM increment changed\n",
pr_info("%lx: The capabilities of the SCM increment changed\n",
(unsigned long) scmdev->address);
SCM_LOG(2, "State changed");
SCM_LOG_STATE(2, scmdev);

16
drivers/s390/char/tty3270.c
View File

@ -915,7 +915,7 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
int i, rc;
/* Check if the tty3270 is already there. */
view = raw3270_find_view(&tty3270_fn, tty->index);
view = raw3270_find_view(&tty3270_fn, tty->index + RAW3270_FIRSTMINOR);
if (!IS_ERR(view)) {
tp = container_of(view, struct tty3270, view);
tty->driver_data = tp;
@ -927,15 +927,16 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
tp->inattr = TF_INPUT;
return tty_port_install(&tp->port, driver, tty);
}
if (tty3270_max_index < tty->index)
tty3270_max_index = tty->index;
if (tty3270_max_index < tty->index + 1)
tty3270_max_index = tty->index + 1;
/* Allocate tty3270 structure on first open. */
tp = tty3270_alloc_view();
if (IS_ERR(tp))
return PTR_ERR(tp);
rc = raw3270_add_view(&tp->view, &tty3270_fn, tty->index);
rc = raw3270_add_view(&tp->view, &tty3270_fn,
tty->index + RAW3270_FIRSTMINOR);
if (rc) {
tty3270_free_view(tp);
return rc;
@ -1846,12 +1847,12 @@ static const struct tty_operations tty3270_ops = {
void tty3270_create_cb(int minor)
{
tty_register_device(tty3270_driver, minor, NULL);
tty_register_device(tty3270_driver, minor - RAW3270_FIRSTMINOR, NULL);
}
void tty3270_destroy_cb(int minor)
{
tty_unregister_device(tty3270_driver, minor);
tty_unregister_device(tty3270_driver, minor - RAW3270_FIRSTMINOR);
}
struct raw3270_notifier tty3270_notifier =
@ -1884,7 +1885,8 @@ static int __init tty3270_init(void)
driver->driver_name = "tty3270";
driver->name = "3270/tty";
driver->major = IBM_TTY3270_MAJOR;
driver->minor_start = 0;
driver->minor_start = RAW3270_FIRSTMINOR;
driver->name_base = RAW3270_FIRSTMINOR;
driver->type = TTY_DRIVER_TYPE_SYSTEM;
driver->subtype = SYSTEM_TYPE_TTY;
driver->init_termios = tty_std_termios;

3
drivers/spi/Kconfig
View File

@ -55,6 +55,7 @@ comment "SPI Master Controller Drivers"
config SPI_ALTERA
tristate "Altera SPI Controller"
depends on GENERIC_HARDIRQS
select SPI_BITBANG
help
This is the driver for the Altera SPI Controller.
@ -310,7 +311,7 @@ config SPI_PXA2XX_DMA
config SPI_PXA2XX
tristate "PXA2xx SSP SPI master"
depends on ARCH_PXA || PCI || ACPI
depends on (ARCH_PXA || PCI || ACPI) && GENERIC_HARDIRQS
select PXA_SSP if ARCH_PXA
help
This enables using a PXA2xx or Sodaville SSP port as a SPI master