[PATCH 2.6.17-rc5-mm2 13/18] ohci1394: make phys_dma parameter read-only

Ability to switch physical DMA on and off at run time would be a nice
feature but a PITA to support by highlevel drivers and userspace apps.
Therefore allow it only to be set when the driver is being loaded.

Signed-off-by: Stefan Richter <[email protected]>

Index: linux-2.6.17-rc5-mm2/drivers/ieee1394/ohci1394.c
===================================================================
--- linux-2.6.17-rc5-mm2.orig/drivers/ieee1394/ohci1394.c	2006-06-01 20:55:45.000000000 +0200
+++ linux-2.6.17-rc5-mm2/drivers/ieee1394/ohci1394.c	2006-06-01 20:55:46.000000000 +0200
@@ -163,7 +163,7 @@ printk(level "%s: fw-host%d: " fmt "\n" 
 
 /* Module Parameters */
 static int phys_dma = 1;
-module_param(phys_dma, int, 0644);
+module_param(phys_dma, int, 0444);
 MODULE_PARM_DESC(phys_dma, "Enable physical dma (default = 1).");
 
 static void dma_trm_tasklet(unsigned long data);


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---

• Follow-Ups:
  • [PATCH 2.6.17-rc5-mm2 14/18] sbp2: sbp2 remove ohci1394 specific constant
    • From: Stefan Richter <[email protected]>

• References:
  • [PATCH 2.6.17-rc5-mm2 00/18] ieee1394: misc updates
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 01/18] video1394: be quiet
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 02/18] ohci1394.c: function calls without effect
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 03/18] sbp2: make TSB42AA9 workaround specific to Momobay CX-1
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 04/18] Semaphore to mutex conversion.
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 05/18] raw1394: fix whitespace after x86_64 compat patch
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 06/18] ieee1394/ohci1394: CycleTooLong interrupt management
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 07/18] ieee1394: support for slow links or slow 1394b phy ports
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 08/18] ieee1394: save RAM by using a single tlabel for broadcast transactions
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 09/18] sbp2: remove manipulation of inquiry response
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 10/18] sbp2: log number of supported concurrent logins
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 11/18] ieee1394: extend lowlevel API for address range properties
    • From: Stefan Richter <[email protected]>
  • [PATCH 2.6.17-rc5-mm2 12/18] ohci1394: set address range properties
    • From: Stefan Richter <[email protected]>

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