Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6

* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (47 commits)
  OMAP clock: use debugfs_remove_recursive() for rewinding
  OMAP2/3/4 core: create omap_device layer
  OMAP: omap_hwmod: call omap_hwmod init at boot; create interconnects
  OMAP2/3/4: create omap_hwmod layer
  OMAP2/3 board-*.c files: read bootloader configuration earlier
  OMAP2/3/4 PRCM: add module IDLEST wait code
  OMAP2/3 PM: create the OMAP PM interface and add a default OMAP PM no-op layer
  OMAP3 clock: remove superfluous calls to omap2_init_clk_clkdm
  OMAP clock: associate MPU clocks with the mpu_clkdm
  OMAP3 clock: Fixed processing of bootarg 'mpurate'
  OMAP: SDRC: Add several new register definitions
  OMAP: powerdomain: Fix overflow when doing powerdomain deps lookups.
  OMAP: PM: Added suspend target state control to debugfs for OMAP3
  OMAP: PM debug: Add PRCM register dump support
  OMAP: PM debug: make powerdomains use PM-debug counters
  OMAP: PM: Add pm-debug counters
  OMAP: PM: Add closures to clkdm_for_each and pwrdm_for_each.
  OMAP: PM: Hook into PM counters
  OMAP: PM counter infrastructure.
  OMAP3: PM: fix lockdep warning caused by omap3_pm_init
  ...

1 files changed, 12 insertions, 11 deletions

diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c
index 4a03013..4b60127 100644
--- a/arch/arm/plat-omap/iommu.c
+++ b/arch/arm/plat-omap/iommu.c
@@ -351,16 +351,14 @@ EXPORT_SYMBOL_GPL(flush_iotlb_all);
 
 #if defined(CONFIG_OMAP_IOMMU_DEBUG_MODULE)
 
-ssize_t iommu_dump_ctx(struct iommu *obj, char *buf)
+ssize_t iommu_dump_ctx(struct iommu *obj, char *buf, ssize_t bytes)
 {
-	ssize_t bytes;
-
 	if (!obj || !buf)
 		return -EINVAL;
 
 	clk_enable(obj->clk);
 
-	bytes = arch_iommu->dump_ctx(obj, buf);
+	bytes = arch_iommu->dump_ctx(obj, buf, bytes);
 
 	clk_disable(obj->clk);
 
@@ -368,7 +366,7 @@ ssize_t iommu_dump_ctx(struct iommu *obj, char *buf)
 }
 EXPORT_SYMBOL_GPL(iommu_dump_ctx);
 
-static int __dump_tlb_entries(struct iommu *obj, struct cr_regs *crs)
+static int __dump_tlb_entries(struct iommu *obj, struct cr_regs *crs, int num)
 {
 	int i;
 	struct iotlb_lock saved, l;
@@ -379,7 +377,7 @@ static int __dump_tlb_entries(struct iommu *obj, struct cr_regs *crs)
 	iotlb_lock_get(obj, &saved);
 	memcpy(&l, &saved, sizeof(saved));
 
-	for (i = 0; i < obj->nr_tlb_entries; i++) {
+	for (i = 0; i < num; i++) {
 		struct cr_regs tmp;
 
 		iotlb_lock_get(obj, &l);
@@ -402,18 +400,21 @@ static int __dump_tlb_entries(struct iommu *obj, struct cr_regs *crs)
  * @obj:	target iommu
  * @buf:	output buffer
  **/
-size_t dump_tlb_entries(struct iommu *obj, char *buf)
+size_t dump_tlb_entries(struct iommu *obj, char *buf, ssize_t bytes)
 {
-	int i, n;
+	int i, num;
 	struct cr_regs *cr;
 	char *p = buf;
 
-	cr = kcalloc(obj->nr_tlb_entries, sizeof(*cr), GFP_KERNEL);
+	num = bytes / sizeof(*cr);
+	num = min(obj->nr_tlb_entries, num);
+
+	cr = kcalloc(num, sizeof(*cr), GFP_KERNEL);
 	if (!cr)
 		return 0;
 
-	n = __dump_tlb_entries(obj, cr);
-	for (i = 0; i < n; i++)
+	num = __dump_tlb_entries(obj, cr, num);
+	for (i = 0; i < num; i++)
 		p += iotlb_dump_cr(obj, cr + i, p);
 	kfree(cr);