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

Pull s390 updates from Martin Schwidefsky:
 "This is the bulk of the s390 patches for the 3.11 merge window.

  Notable enhancements are: the block timeout patches for dasd from
  Hannes, and more work on the PCI support front.  In addition some
  cleanup and the usual bug fixing."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (42 commits)
  s390/dasd: Fail all requests when DASD_FLAG_ABORTIO is set
  s390/dasd: Add 'timeout' attribute
  block: check for timeout function in blk_rq_timed_out()
  block/dasd: detailed I/O errors
  s390/dasd: Reduce amount of messages for specific errors
  s390/dasd: Implement block timeout handling
  s390/dasd: process all requests in the device tasklet
  s390/dasd: make number of retries configurable
  s390/dasd: Clarify comment
  s390/hwsampler: Updated misleading member names in hws_data_entry
  s390/appldata_net_sum: do not use static data
  s390/appldata_mem: do not use static data
  s390/vmwatchdog: do not use static data
  s390/airq: simplify adapter interrupt code
  s390/pci: remove per device debug attribute
  s390/dma: remove gratuitous brackets
  s390/facility: decompose test_facility()
  s390/sclp: remove duplicated include from sclp_ctl.c
  s390/irq: store interrupt information in pt_regs
  s390/drivers: Cocci spatch "ptr_ret.spatch"
  ...

11 files changed, 70 insertions, 34 deletions

diff --git a/arch/s390/include/asm/airq.h b/arch/s390/include/asm/airq.h
index 9819891..4066cee 100644
--- a/arch/s390/include/asm/airq.h
+++ b/arch/s390/include/asm/airq.h
@@ -9,9 +9,18 @@
 #ifndef _ASM_S390_AIRQ_H
 #define _ASM_S390_AIRQ_H
 
-typedef void (*adapter_int_handler_t)(void *, void *);
+struct airq_struct {
+	struct hlist_node list;		/* Handler queueing. */
+	void (*handler)(struct airq_struct *);	/* Thin-interrupt handler */
+	u8 *lsi_ptr;			/* Local-Summary-Indicator pointer */
+	u8 lsi_mask;			/* Local-Summary-Indicator mask */
+	u8 isc;				/* Interrupt-subclass */
+	u8 flags;
+};
 
-void *s390_register_adapter_interrupt(adapter_int_handler_t, void *, u8);
-void s390_unregister_adapter_interrupt(void *, u8);
+#define AIRQ_PTR_ALLOCATED	0x01
+
+int register_adapter_interrupt(struct airq_struct *airq);
+void unregister_adapter_interrupt(struct airq_struct *airq);
 
 #endif /* _ASM_S390_AIRQ_H */
diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h
index 2f8c1ab..3fbc67d 100644
--- a/arch/s390/include/asm/dma-mapping.h
+++ b/arch/s390/include/asm/dma-mapping.h
@@ -53,7 +53,7 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
 	debug_dma_mapping_error(dev, dma_addr);
 	if (dma_ops->mapping_error)
 		return dma_ops->mapping_error(dev, dma_addr);
-	return (dma_addr == DMA_ERROR_CODE);
+	return dma_addr == DMA_ERROR_CODE;
 }
 
 static inline void *dma_alloc_coherent(struct device *dev, size_t size,
diff --git a/arch/s390/include/asm/facility.h b/arch/s390/include/asm/facility.h
index 2ee66a6..0aa6a7e 100644
--- a/arch/s390/include/asm/facility.h
+++ b/arch/s390/include/asm/facility.h
@@ -13,6 +13,16 @@
 
 #define MAX_FACILITY_BIT (256*8)	/* stfle_fac_list has 256 bytes */
 
+static inline int __test_facility(unsigned long nr, void *facilities)
+{
+	unsigned char *ptr;
+
+	if (nr >= MAX_FACILITY_BIT)
+		return 0;
+	ptr = (unsigned char *) facilities + (nr >> 3);
+	return (*ptr & (0x80 >> (nr & 7))) != 0;
+}
+
 /*
  * The test_facility function uses the bit odering where the MSB is bit 0.
  * That makes it easier to query facility bits with the bit number as
@@ -20,12 +30,7 @@
  */
 static inline int test_facility(unsigned long nr)
 {
-	unsigned char *ptr;
-
-	if (nr >= MAX_FACILITY_BIT)
-		return 0;
-	ptr = (unsigned char *) &S390_lowcore.stfle_fac_list + (nr >> 3);
-	return (*ptr & (0x80 >> (nr & 7))) != 0;
+	return __test_facility(nr, &S390_lowcore.stfle_fac_list);
 }
 
 /**
diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h
index fd9be01..cd6b9ee 100644
--- a/arch/s390/include/asm/io.h
+++ b/arch/s390/include/asm/io.h
@@ -13,28 +13,6 @@
 #include <asm/page.h>
 #include <asm/pci_io.h>
 
-/*
- * Change virtual addresses to physical addresses and vv.
- * These are pretty trivial
- */
-static inline unsigned long virt_to_phys(volatile void * address)
-{
-	unsigned long real_address;
-	asm volatile(
-		 "	lra	%0,0(%1)\n"
-		 "	jz	0f\n"
-		 "	la	%0,0\n"
-		 "0:"
-		 : "=a" (real_address) : "a" (address) : "cc");
-	return real_address;
-}
-#define virt_to_phys virt_to_phys
-
-static inline void * phys_to_virt(unsigned long address)
-{
-	return (void *) address;
-}
-
 void *xlate_dev_mem_ptr(unsigned long phys);
 #define xlate_dev_mem_ptr xlate_dev_mem_ptr
 void unxlate_dev_mem_ptr(unsigned long phys, void *addr);
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index 6c18012..6e577ba 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -120,7 +120,6 @@ struct zpci_dev {
 
 	struct dentry	*debugfs_dev;
 	struct dentry	*debugfs_perf;
-	struct dentry	*debugfs_debug;
 };
 
 struct pci_hp_callback_ops {
@@ -143,7 +142,6 @@ int zpci_enable_device(struct zpci_dev *);
 int zpci_disable_device(struct zpci_dev *);
 void zpci_stop_device(struct zpci_dev *);
 void zpci_free_device(struct zpci_dev *);
-int zpci_scan_device(struct zpci_dev *);
 int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);
 int zpci_unregister_ioat(struct zpci_dev *, u8);
 
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index 590c321..e1408dd 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -22,6 +22,9 @@ unsigned long *page_table_alloc(struct mm_struct *, unsigned long);
 void page_table_free(struct mm_struct *, unsigned long *);
 void page_table_free_rcu(struct mmu_gather *, unsigned long *);
 
+int set_guest_storage_key(struct mm_struct *mm, unsigned long addr,
+			  unsigned long key, bool nq);
+
 static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
 {
 	typedef struct { char _[n]; } addrtype;
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index 559512a..52b5653 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -24,6 +24,7 @@ struct pt_regs
 	unsigned long gprs[NUM_GPRS];
 	unsigned long orig_gpr2;
 	unsigned int int_code;
+	unsigned int int_parm;
 	unsigned long int_parm_long;
 };
 
diff --git a/arch/s390/include/uapi/asm/Kbuild b/arch/s390/include/uapi/asm/Kbuild
index 9ccd190..6a9a9eb 100644
--- a/arch/s390/include/uapi/asm/Kbuild
+++ b/arch/s390/include/uapi/asm/Kbuild
@@ -35,6 +35,7 @@ header-y += siginfo.h
 header-y += signal.h
 header-y += socket.h
 header-y += sockios.h
+header-y += sclp_ctl.h
 header-y += stat.h
 header-y += statfs.h
 header-y += swab.h
diff --git a/arch/s390/include/uapi/asm/chsc.h b/arch/s390/include/uapi/asm/chsc.h
index 1c6a7f8..65dc694 100644
--- a/arch/s390/include/uapi/asm/chsc.h
+++ b/arch/s390/include/uapi/asm/chsc.h
@@ -29,6 +29,16 @@ struct chsc_async_area {
 	__u8 data[CHSC_SIZE - sizeof(struct chsc_async_header)];
 } __attribute__ ((packed));
 
+struct chsc_header {
+	__u16 length;
+	__u16 code;
+} __attribute__ ((packed));
+
+struct chsc_sync_area {
+	struct chsc_header header;
+	__u8 data[CHSC_SIZE - sizeof(struct chsc_header)];
+} __attribute__ ((packed));
+
 struct chsc_response_struct {
 	__u16 length;
 	__u16 code;
@@ -126,5 +136,8 @@ struct chsc_cpd_info {
 #define CHSC_INFO_CCL _IOWR(CHSC_IOCTL_MAGIC, 0x86, struct chsc_comp_list)
 #define CHSC_INFO_CPD _IOWR(CHSC_IOCTL_MAGIC, 0x87, struct chsc_cpd_info)
 #define CHSC_INFO_DCAL _IOWR(CHSC_IOCTL_MAGIC, 0x88, struct chsc_dcal)
+#define CHSC_START_SYNC _IOWR(CHSC_IOCTL_MAGIC, 0x89, struct chsc_sync_area)
+#define CHSC_ON_CLOSE_SET _IOWR(CHSC_IOCTL_MAGIC, 0x8a, struct chsc_async_area)
+#define CHSC_ON_CLOSE_REMOVE _IO(CHSC_IOCTL_MAGIC, 0x8b)
 
 #endif
diff --git a/arch/s390/include/uapi/asm/dasd.h b/arch/s390/include/uapi/asm/dasd.h
index 38eca3b..5812a3b 100644
--- a/arch/s390/include/uapi/asm/dasd.h
+++ b/arch/s390/include/uapi/asm/dasd.h
@@ -261,6 +261,10 @@ struct dasd_snid_ioctl_data {
 #define BIODASDQUIESCE _IO(DASD_IOCTL_LETTER,6) 
 /* Resume IO on device */
 #define BIODASDRESUME  _IO(DASD_IOCTL_LETTER,7) 
+/* Abort all I/O on a device */
+#define BIODASDABORTIO _IO(DASD_IOCTL_LETTER, 240)
+/* Allow I/O on a device */
+#define BIODASDALLOWIO _IO(DASD_IOCTL_LETTER, 241)
 
 
 /* retrieve API version number */
diff --git a/arch/s390/include/uapi/asm/sclp_ctl.h b/arch/s390/include/uapi/asm/sclp_ctl.h
new file mode 100644
index 0000000..f281861
--- /dev/null
+++ b/arch/s390/include/uapi/asm/sclp_ctl.h
@@ -0,0 +1,24 @@
+/*
+ * IOCTL interface for SCLP
+ *
+ * Copyright IBM Corp. 2012
+ *
+ * Author: Michael Holzheu <holzheu@linux.vnet.ibm.com>
+ */
+
+#ifndef _ASM_SCLP_CTL_H
+#define _ASM_SCLP_CTL_H
+
+#include <linux/types.h>
+
+struct sclp_ctl_sccb {
+	__u32	cmdw;
+	__u64	sccb;
+} __attribute__((packed));
+
+#define SCLP_CTL_IOCTL_MAGIC 0x10
+
+#define SCLP_CTL_SCCB \
+	_IOWR(SCLP_CTL_IOCTL_MAGIC, 0x10, struct sclp_ctl_sccb)
+
+#endif