On Sunday 11 November 2007, Alan Cox wrote:
> > Subject : 2.6.24-rc1: pata_amd fails to detect 80-pin wire
> > Submitter : "Thomas Lindroth" <[email protected]>
> > References : http://lkml.org/lkml/2007/11/7/152
> > http://bugzilla.kernel.org/show_bug.cgi?id=9322
http://lkml.org/lkml/2007/10/12/537
The regression itself has been foreseen a month ago and it is quite
sad that it is still not fixed...
> Tejun is looking into this - its not trivial so may be 2.6.25 material.
> Similar reports for some other controllers (notably VIA).
We may fix the regression in a bit different way for now and give Tejun
some more time for the complete rework of the cable detection code.
[PATCH] pata_amd/pata_via: de-couple programming of PIO/MWDMA and UDMA timings
* Don't program UDMA timings when programming PIO or MWDMA modes.
This has also a nice side-effect of fixing regression added by commit
681c80b5d96076f447e8101ac4325c82d8dce508 ("libata: correct handling of
SRST reset sequences") (->set_piomode method for PIO0 is called before
->cable_detect method which checks UDMA timings to get the cable type).
* Bump driver version.
Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
---
Untested, please don't merge until it is confirmed to fix the problem.
drivers/ata/pata_amd.c | 5 +++--
drivers/ata/pata_via.c | 4 ++--
2 files changed, 5 insertions(+), 4 deletions(-)
Index: b/drivers/ata/pata_amd.c
===================================================================
--- a/drivers/ata/pata_amd.c
+++ b/drivers/ata/pata_amd.c
@@ -25,7 +25,7 @@
#include <linux/libata.h>
#define DRV_NAME "pata_amd"
-#define DRV_VERSION "0.3.9"
+#define DRV_VERSION "0.3.10"
/**
* timing_setup - shared timing computation and load
@@ -115,7 +115,8 @@ static void timing_setup(struct ata_port
}
/* UDMA timing */
- pci_write_config_byte(pdev, offset + 0x10 + (3 - dn), t);
+ if (at.udma)
+ pci_write_config_byte(pdev, offset + 0x10 + (3 - dn), t);
}
/**
Index: b/drivers/ata/pata_via.c
===================================================================
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -63,7 +63,7 @@
#include <linux/dmi.h>
#define DRV_NAME "pata_via"
-#define DRV_VERSION "0.3.2"
+#define DRV_VERSION "0.3.3"
/*
* The following comes directly from Vojtech Pavlik's ide/pci/via82cxxx
@@ -296,7 +296,7 @@ static void via_do_set_mode(struct ata_p
}
/* Set UDMA unless device is not UDMA capable */
- if (udma_type) {
+ if (udma_type && t.udma) {
u8 cable80_status;
/* Get 80-wire cable detection bit */
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
