Merge tag 'char-misc-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc updates from Greg KH:
 "Here's the big char/misc driver tree merge for 3.11-rc1

  A variety of different driver patches here.  All of these have been in
  linux-next for a while, and the networking patches were acked-by David
  Miller, as it made sense for those patches to come through this tree"

* tag 'char-misc-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (102 commits)
  Revert "char: misc: assign file->private_data in all cases"
  drivers: uio_pdrv_genirq: Use of_match_ptr() macro
  mei: check whether hw start has succeeded
  mei: check if the hardware reset succeeded
  mei: mei_cl_connect: don't multiply the timeout twice
  mei: do not override a client writing state when buffering
  mei: move mei_cl_irq_write_complete to client.c
  UIO: Fix concurrency issue
  drivers: uio_dmem_genirq: Use of_match_ptr() macro
  char: misc: assign file->private_data in all cases
  drivers: hv: allocate synic structures before hv_synic_init()
  drivers: hv: check interrupt mask before read_index
  vme: vme_tsi148.c: fix error return code in tsi148_probe()
  FMC: fix error handling in probe() function
  fmc: avoid readl/writel namespace conflict
  FMC: NULL dereference on allocation failure
  UIO: fix uio_pdrv_genirq with device tree but no interrupt
  UIO: allow binding uio_pdrv_genirq.c to devices using command line option
  FMC: add a char-device mezzanine driver
  FMC: add a driver to write mezzanine EEPROM
  ...

1 files changed, 53 insertions, 32 deletions

diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index ae4923756d9..88f4096fa07 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -265,6 +265,59 @@ u16 hv_signal_event(void *con_id)
 	return status;
 }
 
+
+int hv_synic_alloc(void)
+{
+	size_t size = sizeof(struct tasklet_struct);
+	int cpu;
+
+	for_each_online_cpu(cpu) {
+		hv_context.event_dpc[cpu] = kmalloc(size, GFP_ATOMIC);
+		if (hv_context.event_dpc[cpu] == NULL) {
+			pr_err("Unable to allocate event dpc\n");
+			goto err;
+		}
+		tasklet_init(hv_context.event_dpc[cpu], vmbus_on_event, cpu);
+
+		hv_context.synic_message_page[cpu] =
+			(void *)get_zeroed_page(GFP_ATOMIC);
+
+		if (hv_context.synic_message_page[cpu] == NULL) {
+			pr_err("Unable to allocate SYNIC message page\n");
+			goto err;
+		}
+
+		hv_context.synic_event_page[cpu] =
+			(void *)get_zeroed_page(GFP_ATOMIC);
+
+		if (hv_context.synic_event_page[cpu] == NULL) {
+			pr_err("Unable to allocate SYNIC event page\n");
+			goto err;
+		}
+	}
+
+	return 0;
+err:
+	return -ENOMEM;
+}
+
+void hv_synic_free_cpu(int cpu)
+{
+	kfree(hv_context.event_dpc[cpu]);
+	if (hv_context.synic_message_page[cpu])
+		free_page((unsigned long)hv_context.synic_event_page[cpu]);
+	if (hv_context.synic_message_page[cpu])
+		free_page((unsigned long)hv_context.synic_message_page[cpu]);
+}
+
+void hv_synic_free(void)
+{
+	int cpu;
+
+	for_each_online_cpu(cpu)
+		hv_synic_free_cpu(cpu);
+}
+
 /*
  * hv_synic_init - Initialize the Synthethic Interrupt Controller.
  *
@@ -289,30 +342,6 @@ void hv_synic_init(void *arg)
 	/* Check the version */
 	rdmsrl(HV_X64_MSR_SVERSION, version);
 
-	hv_context.event_dpc[cpu] = kmalloc(sizeof(struct tasklet_struct),
-					    GFP_ATOMIC);
-	if (hv_context.event_dpc[cpu] == NULL) {
-		pr_err("Unable to allocate event dpc\n");
-		goto cleanup;
-	}
-	tasklet_init(hv_context.event_dpc[cpu], vmbus_on_event, cpu);
-
-	hv_context.synic_message_page[cpu] =
-		(void *)get_zeroed_page(GFP_ATOMIC);
-
-	if (hv_context.synic_message_page[cpu] == NULL) {
-		pr_err("Unable to allocate SYNIC message page\n");
-		goto cleanup;
-	}
-
-	hv_context.synic_event_page[cpu] =
-		(void *)get_zeroed_page(GFP_ATOMIC);
-
-	if (hv_context.synic_event_page[cpu] == NULL) {
-		pr_err("Unable to allocate SYNIC event page\n");
-		goto cleanup;
-	}
-
 	/* Setup the Synic's message page */
 	rdmsrl(HV_X64_MSR_SIMP, simp.as_uint64);
 	simp.simp_enabled = 1;
@@ -355,14 +384,6 @@ void hv_synic_init(void *arg)
 	rdmsrl(HV_X64_MSR_VP_INDEX, vp_index);
 	hv_context.vp_index[cpu] = (u32)vp_index;
 	return;
-
-cleanup:
-	if (hv_context.synic_event_page[cpu])
-		free_page((unsigned long)hv_context.synic_event_page[cpu]);
-
-	if (hv_context.synic_message_page[cpu])
-		free_page((unsigned long)hv_context.synic_message_page[cpu]);
-	return;
 }
 
 /*