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From d8b18f6b814a830dd1279669e10fb5f714e2138f Mon Sep 17 00:00:00 2001
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From: Vladimir Serbinenko <phcoder@gmail.com>
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Date: Wed, 29 Jan 2014 23:45:18 +0100
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Subject: [PATCH 052/198] * grub-core/disk/ahci.c: Allocate and clean space for
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all possible 32 slots to avoid pointing to uninited area.
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---
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ChangeLog | 5 +++++
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grub-core/disk/ahci.c | 8 +++++++-
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2 files changed, 12 insertions(+), 1 deletion(-)
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diff --git a/ChangeLog b/ChangeLog
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index 51eba95..9bb1817 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,5 +1,10 @@
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2014-01-29 Vladimir Serbinenko <phcoder@gmail.com>
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+ * grub-core/disk/ahci.c: Allocate and clean space for all possible 32
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+ slots to avoid pointing to uninited area.
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+
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+2014-01-29 Vladimir Serbinenko <phcoder@gmail.com>
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+
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* grub-core/disk/ahci.c: Do not enable I/O decoding and keep
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enabling busmaster for the end.
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diff --git a/grub-core/disk/ahci.c b/grub-core/disk/ahci.c
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index 18c1327..d63fd09 100644
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--- a/grub-core/disk/ahci.c
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+++ b/grub-core/disk/ahci.c
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@@ -358,7 +358,7 @@ grub_ahci_pciinit (grub_pci_device_t dev,
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grub_dprintf ("ahci", "err: %x\n",
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adevs[i]->hba->ports[adevs[i]->port].sata_error);
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- adevs[i]->command_list_chunk = grub_memalign_dma32 (1024, sizeof (struct grub_ahci_cmd_head));
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+ adevs[i]->command_list_chunk = grub_memalign_dma32 (1024, sizeof (struct grub_ahci_cmd_head) * 32);
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if (!adevs[i]->command_list_chunk)
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{
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adevs[i] = 0;
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@@ -376,6 +376,12 @@ grub_ahci_pciinit (grub_pci_device_t dev,
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adevs[i]->command_list = grub_dma_get_virt (adevs[i]->command_list_chunk);
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adevs[i]->command_table = grub_dma_get_virt (adevs[i]->command_table_chunk);
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+
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+ grub_memset ((void *) adevs[i]->command_list, 0,
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+ sizeof (struct grub_ahci_cmd_table));
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+ grub_memset ((void *) adevs[i]->command_table, 0,
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+ sizeof (struct grub_ahci_cmd_head) * 32);
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+
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adevs[i]->command_list->command_table_base
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= grub_dma_get_phys (adevs[i]->command_table_chunk);
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--
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2.7.4
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