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From: Greg KH on 19 Feb 2010 12:20
2.6.32-stable review patch. If anyone has any objections, please let us know.

------------------

From: Zhenyu Wang <zhenyuw(a)linux.intel.com>

commit 823f68fd646da6a39a9c0d3eb4c60d69dab5aa13 upstream.

This one reverts 9e3a6d155ed0a7636b926a798dd7221ea107b274.
As reported by http://bugzilla.kernel.org/show_bug.cgi?id=14485,
this dump will cause hang problem on some machine. If something
really needs this kind of full registers dump, that could be done
within intel-gpu-tools.

Cc: Ben Gamari <bgamari.foss(a)gmail.com>
Signed-off-by: Zhenyu Wang <zhenyuw(a)linux.intel.com>
Signed-off-by: Eric Anholt <eric(a)anholt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>


---
drivers/gpu/drm/i915/i915_debugfs.c | 30 ------------------------------
1 file changed, 30 deletions(-)

--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -384,37 +384,7 @@ out:
return 0;
}

-static int i915_registers_info(struct seq_file *m, void *data) {
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_device *dev = node->minor->dev;
- drm_i915_private_t *dev_priv = dev->dev_private;
- uint32_t reg;
-
-#define DUMP_RANGE(start, end) \
- for (reg=start; reg < end; reg += 4) \
- seq_printf(m, "%08x\t%08x\n", reg, I915_READ(reg));
-
- DUMP_RANGE(0x00000, 0x00fff); /* VGA registers */
- DUMP_RANGE(0x02000, 0x02fff); /* instruction, memory, interrupt control registers */
- DUMP_RANGE(0x03000, 0x031ff); /* FENCE and PPGTT control registers */
- DUMP_RANGE(0x03200, 0x03fff); /* frame buffer compression registers */
- DUMP_RANGE(0x05000, 0x05fff); /* I/O control registers */
- DUMP_RANGE(0x06000, 0x06fff); /* clock control registers */
- DUMP_RANGE(0x07000, 0x07fff); /* 3D internal debug registers */
- DUMP_RANGE(0x07400, 0x088ff); /* GPE debug registers */
- DUMP_RANGE(0x0a000, 0x0afff); /* display palette registers */
- DUMP_RANGE(0x10000, 0x13fff); /* MMIO MCHBAR */
- DUMP_RANGE(0x30000, 0x3ffff); /* overlay registers */
- DUMP_RANGE(0x60000, 0x6ffff); /* display engine pipeline registers */
- DUMP_RANGE(0x70000, 0x72fff); /* display and cursor registers */
- DUMP_RANGE(0x73000, 0x73fff); /* performance counters */
-
- return 0;
-}
-
-
static struct drm_info_list i915_debugfs_list[] = {
- {"i915_regs", i915_registers_info, 0},
{"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
{"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
{"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},


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