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From d8b18f6b814a830dd1279669e10fb5f714e2138f Mon Sep 17 00:00:00 2001
From: Vladimir Serbinenko <phcoder@gmail.com>
Date: Wed, 29 Jan 2014 23:45:18 +0100
Subject: [PATCH 052/237] * grub-core/disk/ahci.c: Allocate and clean space for
all possible 32 slots to avoid pointing to uninited area.
---
ChangeLog | 5 +++++
grub-core/disk/ahci.c | 8 +++++++-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/ChangeLog b/ChangeLog
index 51eba95..9bb1817 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
2014-01-29 Vladimir Serbinenko <phcoder@gmail.com>
+ * grub-core/disk/ahci.c: Allocate and clean space for all possible 32
+ slots to avoid pointing to uninited area.
+
+2014-01-29 Vladimir Serbinenko <phcoder@gmail.com>
+
* grub-core/disk/ahci.c: Do not enable I/O decoding and keep
enabling busmaster for the end.
diff --git a/grub-core/disk/ahci.c b/grub-core/disk/ahci.c
index 18c1327..d63fd09 100644
--- a/grub-core/disk/ahci.c
+++ b/grub-core/disk/ahci.c
@@ -358,7 +358,7 @@ grub_ahci_pciinit (grub_pci_device_t dev,
grub_dprintf ("ahci", "err: %x\n",
adevs[i]->hba->ports[adevs[i]->port].sata_error);
- adevs[i]->command_list_chunk = grub_memalign_dma32 (1024, sizeof (struct grub_ahci_cmd_head));
+ adevs[i]->command_list_chunk = grub_memalign_dma32 (1024, sizeof (struct grub_ahci_cmd_head) * 32);
if (!adevs[i]->command_list_chunk)
{
adevs[i] = 0;
@@ -376,6 +376,12 @@ grub_ahci_pciinit (grub_pci_device_t dev,
adevs[i]->command_list = grub_dma_get_virt (adevs[i]->command_list_chunk);
adevs[i]->command_table = grub_dma_get_virt (adevs[i]->command_table_chunk);
+
+ grub_memset ((void *) adevs[i]->command_list, 0,
+ sizeof (struct grub_ahci_cmd_table));
+ grub_memset ((void *) adevs[i]->command_table, 0,
+ sizeof (struct grub_ahci_cmd_head) * 32);
+
adevs[i]->command_list->command_table_base
= grub_dma_get_phys (adevs[i]->command_table_chunk);
--
2.9.3