Re: [RFC: 2.6 patch] drivers/pci/: possible cleanups

2005-02-19 Thread Matthew Wilcox
On Sat, Feb 19, 2005 at 12:54:19AM +0100, Adrian Bunk wrote:
> - remove the following unused functions:
>   - pci.c: pci_find_ext_capability

The pcie bridge driver ought to be using this.  I haven't submitted that
cleanup patch yet.

-- 
"Next the statesmen will invent cheap lies, putting the blame upon 
the nation that is attacked, and every man will be glad of those
conscience-soothing falsities, and will diligently study them, and refuse
to examine any refutations of them; and thus he will by and by convince 
himself that the war is just, and will thank God for the better sleep 
he enjoys after this process of grotesque self-deception." -- Mark Twain
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Re: [RFC: 2.6 patch] drivers/pci/: possible cleanups

2005-02-18 Thread Jon Smirl
On Sat, 19 Feb 2005 00:54:19 +0100, Adrian Bunk <[EMAIL PROTECTED]> wrote:
> This patch contains the following possible cleanups:
> - pci-acpi.c: make OSC_UUID static
> - remove the following unused functions:
>   - pci-acpi.c: acpi_query_osc
>   - pci-acpi.c: pci_osc_support_set
>   - pci.c: pci_find_ext_capability
>   - rom.c: pci_map_rom_copy
>   - rom.c: pci_remove_rom
> - remove the following unneeded EXPORT_SYMBOL's:
>   - pci-acpi.c: pci_osc_support_set
>   - rom.c: pci_map_rom_copy
>   - rom.c: pci_remove_rom

pci_map_rom_copy and pci_remove_rom are there to support boards that
can't access their hardware and their ROM at the same time. These
boards are known to exist but nobody has updated a driver yet to use
the new routines. These should be left in place as the PCI spec
explicitly allows the non-simultaneous access case.

pci_remove_rom should probably be renamed to pci_remove_rom_copy.

-- 
Jon Smirl
[EMAIL PROTECTED]
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[RFC: 2.6 patch] drivers/pci/: possible cleanups

2005-02-18 Thread Adrian Bunk
This patch contains the following possible cleanups:
- pci-acpi.c: make OSC_UUID static
- remove the following unused functions:
  - pci-acpi.c: acpi_query_osc
  - pci-acpi.c: pci_osc_support_set
  - pci.c: pci_find_ext_capability
  - rom.c: pci_map_rom_copy
  - rom.c: pci_remove_rom
- remove the following unneeded EXPORT_SYMBOL's:
  - pci-acpi.c: pci_osc_support_set
  - rom.c: pci_map_rom_copy
  - rom.c: pci_remove_rom

Which of these changes are correct and which conflict with pending 
patches?

Signed-off-by: Adrian Bunk <[EMAIL PROTECTED]>

---

 drivers/pci/pci-acpi.c   |   97 ---
 drivers/pci/pci.c|   48 ---
 drivers/pci/rom.c|   54 -
 include/linux/pci-acpi.h |2 
 include/linux/pci.h  |4 -
 5 files changed, 1 insertion(+), 204 deletions(-)

--- linux-2.6.11-rc3-mm2-full/include/linux/pci-acpi.h.old  2005-02-17 
23:18:44.0 +0100
+++ linux-2.6.11-rc3-mm2-full/include/linux/pci-acpi.h  2005-02-17 
23:18:54.0 +0100
@@ -48,14 +48,12 @@
 
 #ifdef CONFIG_ACPI
 extern acpi_status pci_osc_control_set(u32 flags);
-extern acpi_status pci_osc_support_set(u32 flags);
 #else
 #if !defined(acpi_status)
 typedef u32acpi_status;
 #define AE_ERROR   (acpi_status) (0x0001)
 #endif
 static inline acpi_status pci_osc_control_set(u32 flags) {return AE_ERROR;}
-static inline acpi_status pci_osc_support_set(u32 flags) {return AE_ERROR;} 
 #endif
 
 #endif /* _PCI_ACPI_H_ */
--- linux-2.6.11-rc3-mm2-full/drivers/pci/pci-acpi.c.old2005-02-17 
23:17:28.0 +0100
+++ linux-2.6.11-rc3-mm2-full/drivers/pci/pci-acpi.c2005-02-17 
23:48:50.0 +0100
@@ -19,72 +19,7 @@
 
 static u32 ctrlset_buf[3] = {0, 0, 0};
 static u32 global_ctrlsets = 0;
-u8 OSC_UUID[16] = {0x5B, 0x4D, 0xDB, 0x33, 0xF7, 0x1F, 0x1C, 0x40, 0x96, 0x57, 
0x74, 0x41, 0xC0, 0x3D, 0xD7, 0x66};
-
-static acpi_status  
-acpi_query_osc (
-   acpi_handle handle,
-   u32 level,
-   void*context,
-   void**retval )
-{
-   acpi_status status;
-   struct acpi_object_list input;
-   union acpi_object   in_params[4];
-   struct acpi_buffer  output;
-   union acpi_object   out_obj;
-   u32 osc_dw0;
-
-   /* Setting up output buffer */
-   output.length = sizeof(out_obj) + 3*sizeof(u32);  
-   output.pointer = &out_obj;
-   
-   /* Setting up input parameters */
-   input.count = 4;
-   input.pointer = in_params;
-   in_params[0].type   = ACPI_TYPE_BUFFER;
-   in_params[0].buffer.length  = 16;
-   in_params[0].buffer.pointer = OSC_UUID;
-   in_params[1].type   = ACPI_TYPE_INTEGER;
-   in_params[1].integer.value  = 1;
-   in_params[2].type   = ACPI_TYPE_INTEGER;
-   in_params[2].integer.value  = 3;
-   in_params[3].type   = ACPI_TYPE_BUFFER;
-   in_params[3].buffer.length  = 12;
-   in_params[3].buffer.pointer = (u8 *)context;
-
-   status = acpi_evaluate_object(handle, "_OSC", &input, &output);
-   if (ACPI_FAILURE (status)) {
-   printk(KERN_DEBUG  
-   "Evaluate _OSC Set fails. Status = 0x%04x\n", status);
-   return status;
-   }
-   if (out_obj.type != ACPI_TYPE_BUFFER) {
-   printk(KERN_DEBUG  
-   "Evaluate _OSC returns wrong type\n");
-   return AE_TYPE;
-   }
-   osc_dw0 = *((u32 *) out_obj.buffer.pointer);
-   if (osc_dw0) {
-   if (osc_dw0 & OSC_REQUEST_ERROR)
-   printk(KERN_DEBUG "_OSC request fails\n"); 
-   if (osc_dw0 & OSC_INVALID_UUID_ERROR)
-   printk(KERN_DEBUG "_OSC invalid UUID\n"); 
-   if (osc_dw0 & OSC_INVALID_REVISION_ERROR)
-   printk(KERN_DEBUG "_OSC invalid revision\n"); 
-   if (osc_dw0 & OSC_CAPABILITIES_MASK_ERROR) {
-   /* Update Global Control Set */
-   global_ctrlsets = *((u32 *)(out_obj.buffer.pointer+8));
-   return AE_OK;
-   }
-   return AE_ERROR;
-   }
-
-   /* Update Global Control Set */
-   global_ctrlsets = *((u32 *)(out_obj.buffer.pointer + 8));
-   return AE_OK;
-}
-
+static u8 OSC_UUID[16] = {0x5B, 0x4D, 0xDB, 0x33, 0xF7, 0x1F, 0x1C, 0x40, 
0x96, 0x57, 0x74, 0x41, 0xC0, 0x3D, 0xD7, 0x66};
 
 static acpi_status  
 acpi_run_osc (
@@ -147,36 +82,6 @@
 }
 
 /**
- * pci_osc_support_set - register OS support to Firmware
- * @flags: OS support bits
- *
- * Update OS support fields and doing a _OSC Query to obtain an update
- * from Firmware on supported control bits.
- **/
-acpi_status pci_osc_support_set(u32 flags)
-{
-   u32 temp;
-
-   if (!(flags & OSC_SUPPORT_MASKS)) {
-