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iommu/amd: Remove cmd_buf_size and evt_buf_size from struct amd_iommu

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The driver always uses a constant size for these buffers
anyway, so there is no need to waste memory to store the
sizes.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel
2015-10-20 17:33:41 +02:00
parent ca9cab3a5a
commit deba4bce16
3 changed files with 5 additions and 17 deletions
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8
drivers/iommu/amd_iommu_init.c
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@@ -521,8 +521,6 @@ static u8 * __init alloc_command_buffer(struct amd_iommu *iommu)
if (cmd_buf == NULL)
return NULL;
iommu->cmd_buf_size = CMD_BUFFER_SIZE | CMD_BUFFER_UNINITIALIZED;
return cmd_buf;
}
@@ -557,13 +555,11 @@ static void iommu_enable_command_buffer(struct amd_iommu *iommu)
&entry, sizeof(entry));
amd_iommu_reset_cmd_buffer(iommu);
iommu->cmd_buf_size &= ~(CMD_BUFFER_UNINITIALIZED);
}
static void __init free_command_buffer(struct amd_iommu *iommu)
{
free_pages((unsigned long)iommu->cmd_buf,
get_order(iommu->cmd_buf_size & ~(CMD_BUFFER_UNINITIALIZED)));
free_pages((unsigned long)iommu->cmd_buf, get_order(CMD_BUFFER_SIZE));
}
/* allocates the memory where the IOMMU will log its events to */
@@ -575,8 +571,6 @@ static u8 * __init alloc_event_buffer(struct amd_iommu *iommu)
if (iommu->evt_buf == NULL)
return NULL;
iommu->evt_buf_size = EVT_BUFFER_SIZE;
return iommu->evt_buf;
}