[U-Boot] [PATCH] cmd_ide: Fix detection problem with missing devices

[U-Boot] [PATCH] cmd_ide: Fix detection problem with missing devices

[Stefan Roese]

Currently only IDE busses are probed and all possible available devices
are listed in the IDE bootup log. Even when devices on the bus are not
available. This leads to the following output on the CPCI750:

IDE:   Bus 0: OK Bus 1: OK
  Device 0: Model: HITACHI_DK23FA-20J Firm: 00M7A0A0 Ser#: 42D182
            Type: Hard Disk
            Capacity: 19077.1 MB = 18.6 GB (39070080 x 512)
  Device 1: Model:  Firm:  Ser#:
            Type: # 1F #
            Capacity: not available
  Device 2: Model: SanDisk SDCFB-128 Firm: vde 1.10 Ser#: gmo5i311404
            Type: Removable Hard Disk
            Capacity: 122.5 MB = 0.1 GB (250880 x 512)
  Device 3: Model:  Firm:  Ser#:
            Type: # 1F #
            Capacity: not available

Here devices 1 + 3 are listed which are not availble.

This patch now fixes this problem by skipping the device output for
non-available devices. This is the resulting log:

IDE:   Bus 0: OK Bus 1: OK
  Device 0: Model: HITACHI_DK23FA-20J Firm: 00M7A0A0 Ser#: 42D182
            Type: Hard Disk
            Capacity: 19077.1 MB = 18.6 GB (39070080 x 512)
  Device 1: not available
  Device 2: Model: SanDisk SDCFB-128 Firm: vde 1.10 Ser#: gmo5i311404
            Type: Removable Hard Disk
            Capacity: 122.5 MB = 0.1 GB (250880 x 512)
  Device 3: not available

Signed-off-by: Stefan Roese <sr@denx.de>
---
 common/cmd_ide.c |   21 ++++++++++++++-------
 1 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/common/cmd_ide.c b/common/cmd_ide.c
index 71db933..7f9217d 100644
--- a/common/cmd_ide.c
+++ b/common/cmd_ide.c
@@ -154,7 +154,7 @@ static void ide_reset(void);
 #define ide_reset()		/* dummy */
 #endif
 
-static void ide_ident(block_dev_desc_t *dev_desc);
+static int ide_ident(block_dev_desc_t *dev_desc);
 static uchar ide_wait(int dev, ulong t);
 
 #define IDE_TIME_OUT	2000	/* 2 sec timeout */
@@ -714,6 +714,7 @@ skip_bus:
 
 	curr_device = -1;
 	for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
+		int ret;
 #ifdef CONFIG_IDE_LED
 		int led = (IDE_BUS(i) == 0) ? LED_IDE1 : LED_IDE2;
 #endif
@@ -727,8 +728,12 @@ skip_bus:
 		if (!ide_bus_ok[IDE_BUS(i)])
 			continue;
 		ide_led(led, 1);	/* LED on       */
-		ide_ident(&ide_dev_desc[i]);
+		ret = ide_ident(&ide_dev_desc[i]);
 		ide_led(led, 0);	/* LED off      */
+		if (ret < 0) {
+			puts("not available\n");
+			continue;
+		}
 		dev_print(&ide_dev_desc[i]);
 		if ((ide_dev_desc[i].lba > 0) && (ide_dev_desc[i].blksz > 0)) {
 			init_part(&ide_dev_desc[i]);	/* initialize partition type */
@@ -987,7 +992,7 @@ static void input_data(int dev, ulong *sect_buf, int words)
 
 /* -------------------------------------------------------------------------
  */
-static void ide_ident(block_dev_desc_t *dev_desc)
+static int ide_ident(block_dev_desc_t *dev_desc)
 {
 	ulong iobuf[ATA_SECTORWORDS];
 	unsigned char c;
@@ -1018,7 +1023,7 @@ static void ide_ident(block_dev_desc_t *dev_desc)
 		max_bus_scan = CONFIG_SYS_IDE_MAXBUS;
 	if (device >= max_bus_scan * 2) {
 		dev_desc->type = DEV_TYPE_UNKNOWN;
-		return;
+		return -1;
 	}
 #endif
 
@@ -1087,7 +1092,7 @@ static void ide_ident(block_dev_desc_t *dev_desc)
 				 ATA_LBA | ATA_DEVICE(device));
 			retries++;
 #else
-			return;
+			return -1;
 #endif
 		}
 #ifdef CONFIG_ATAPI
@@ -1096,7 +1101,7 @@ static void ide_ident(block_dev_desc_t *dev_desc)
 	}			/* see above - ugly to read */
 
 	if (retries == 2)	/* Not found */
-		return;
+		return -1;
 #endif
 
 	input_swap_data(device, iobuf, ATA_SECTORWORDS);
@@ -1161,7 +1166,7 @@ static void ide_ident(block_dev_desc_t *dev_desc)
 #ifdef CONFIG_ATAPI
 	if (dev_desc->if_type == IF_TYPE_ATAPI) {
 		atapi_inquiry(dev_desc);
-		return;
+		return 0;
 	}
 #endif /* CONFIG_ATAPI */
 
@@ -1193,6 +1198,8 @@ static void ide_ident(block_dev_desc_t *dev_desc)
 	dev_desc->type = DEV_TYPE_HARDDISK;
 	dev_desc->blksz = ATA_BLOCKSIZE;
 	dev_desc->lun = 0;	/* just to fill something in... */
+
+	return 0;
 }
 
 /* ------------------------------------------------------------------------- */
-- 
1.6.2.5

[U-Boot] [PATCH] cmd_ide: Fix detection problem with missing devices

[Wolfgang Denk]

Dear Stefan Roese,

In message <1242278687-23685-1-git-send-email-sr@denx.de> you wrote:
> Currently only IDE busses are probed and all possible available devices
> are listed in the IDE bootup log. Even when devices on the bus are not
> available. This leads to the following output on the CPCI750:
> 
> IDE:   Bus 0: OK Bus 1: OK
>   Device 0: Model: HITACHI_DK23FA-20J Firm: 00M7A0A0 Ser#: 42D182
>             Type: Hard Disk
>             Capacity: 19077.1 MB = 18.6 GB (39070080 x 512)
>   Device 1: Model:  Firm:  Ser#:
>             Type: # 1F #
>             Capacity: not available
>   Device 2: Model: SanDisk SDCFB-128 Firm: vde 1.10 Ser#: gmo5i311404
>             Type: Removable Hard Disk
>             Capacity: 122.5 MB = 0.1 GB (250880 x 512)
>   Device 3: Model:  Firm:  Ser#:
>             Type: # 1F #
>             Capacity: not available

If my understanding is correct, then this is a bug on your hardware.

>  #endif
> @@ -727,8 +728,12 @@ skip_bus:
>  		if (!ide_bus_ok[IDE_BUS(i)])
>  			continue;
>  		ide_led(led, 1);	/* LED on       */
> -		ide_ident(&ide_dev_desc[i]);
> +		ret = ide_ident(&ide_dev_desc[i]);
>  		ide_led(led, 0);	/* LED off      */
> +		if (ret < 0) {
> +			puts("not available\n");
> +			continue;
> +		}

IIRC this should not be needed; normally, ide_bus_ok() should catch
this.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
...when fits of creativity run strong, more than  one  programmer  or
writer  has  been  known to abandon the desktop for the more spacious
floor.                                             - Fred Brooks, Jr.

[U-Boot] [PATCH] cmd_ide: Fix detection problem with missing devices

[Stefan Roese]

Hi Wolfgang,

On Thursday 14 May 2009 15:44:01 Wolfgang Denk wrote:
> > Currently only IDE busses are probed and all possible available devices
> > are listed in the IDE bootup log. Even when devices on the bus are not
> > available. This leads to the following output on the CPCI750:
> >
> > IDE:   Bus 0: OK Bus 1: OK
> >   Device 0: Model: HITACHI_DK23FA-20J Firm: 00M7A0A0 Ser#: 42D182
> >             Type: Hard Disk
> >             Capacity: 19077.1 MB = 18.6 GB (39070080 x 512)
> >   Device 1: Model:  Firm:  Ser#:
> >             Type: # 1F #
> >             Capacity: not available
> >   Device 2: Model: SanDisk SDCFB-128 Firm: vde 1.10 Ser#: gmo5i311404
> >             Type: Removable Hard Disk
> >             Capacity: 122.5 MB = 0.1 GB (250880 x 512)
> >   Device 3: Model:  Firm:  Ser#:
> >             Type: # 1F #
> >             Capacity: not available
>
> If my understanding is correct, then this is a bug on your hardware.

I don't think so.

> >  #endif
> > @@ -727,8 +728,12 @@ skip_bus:
> >  		if (!ide_bus_ok[IDE_BUS(i)])
> >  			continue;
> >  		ide_led(led, 1);	/* LED on       */
> > -		ide_ident(&ide_dev_desc[i]);
> > +		ret = ide_ident(&ide_dev_desc[i]);
> >  		ide_led(led, 0);	/* LED off      */
> > +		if (ret < 0) {
> > +			puts("not available\n");
> > +			continue;
> > +		}
>
> IIRC this should not be needed; normally, ide_bus_ok() should catch
> this.

No. ide_bus_ok() only checks the first drive/device on a bus. If this device 
is ok, then all drives from this bus are printed.

Best regards,
Stefan

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================

[U-Boot] [PATCH] cmd_ide: Fix detection problem with missing devices

[Wolfgang Denk]

Dear Stefan Roese,

In message <200905141555.33901.sr@denx.de> you wrote:
> 
> > > IDE:   Bus 0: OK Bus 1: OK
> > >   Device 0: Model: HITACHI_DK23FA-20J Firm: 00M7A0A0 Ser#: 42D182
> > >             Type: Hard Disk
> > >             Capacity: 19077.1 MB = 18.6 GB (39070080 x 512)
> > >   Device 1: Model:  Firm:  Ser#:
> > >             Type: # 1F #
> > >             Capacity: not available
> > >   Device 2: Model: SanDisk SDCFB-128 Firm: vde 1.10 Ser#: gmo5i311404
> > >             Type: Removable Hard Disk
> > >             Capacity: 122.5 MB = 0.1 GB (250880 x 512)
> > >   Device 3: Model:  Firm:  Ser#:
> > >             Type: # 1F #
> > >             Capacity: not available
> >
> > If my understanding is correct, then this is a bug on your hardware.
> 
> I don't think so.

I do, because what we see on other hardware looks different:

For example:

U-Boot 1.3.2-rc2-g02e4b4e3 (Feb 28 2008 - 16:46:26)
...
IDE:   Bus 0: ..OK 
  Device 0: Model: HITACHI_DK23DA-20 Firm: 00J2A0A1 Ser#: 12Y0MN
            Type: Hard Disk
            Capacity: 19077.1 MB = 18.6 GB (39070080 x 512)
  Device 1: not available
SRAM:  512 kB
...


If your board probes for a non-existing Device 1 and tries to print
Model and Firmware versions, then there must be something wrong...

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Many aligators will be slain, but the swamp will remain.

[U-Boot] [PATCH] cmd_ide: Fix detection problem with missing devices

[Stefan Roese]

On Thursday 14 May 2009 16:59:51 Wolfgang Denk wrote:
> > > If my understanding is correct, then this is a bug on your hardware.
> >
> > I don't think so.
>
> I do, because what we see on other hardware looks different:
>
> For example:
>
> U-Boot 1.3.2-rc2-g02e4b4e3 (Feb 28 2008 - 16:46:26)
  ^^^^^^^^^^^^^

That's very old.

> ...
> IDE:   Bus 0: ..OK
>   Device 0: Model: HITACHI_DK23DA-20 Firm: 00J2A0A1 Ser#: 12Y0MN
>             Type: Hard Disk
>             Capacity: 19077.1 MB = 18.6 GB (39070080 x 512)
>   Device 1: not available
> SRAM:  512 kB
> ...
>
>
> If your board probes for a non-existing Device 1 and tries to print
> Model and Firmware versions, then there must be something wrong...

From my understanding this worked at some point on the CPCI750 as well. 
Perhaps you could give the TOT U-Boot version a try on your board used above. 
My guess is that this will fail as well.

I tried to locate a problem that was introduced at some time but couldn't 
locate it (no, I didn't use git bisect). But looking at the current code this 
just can't work as is for the 2nd drive. And I still think my fix is ok.

Thanks.

Best regards,
Stefan

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================

[U-Boot] [PATCH] cmd_ide: Fix detection problem with missing devices

[Wolfgang Denk]

Dear Stefan Roese,

In message <200905141714.34154.sr@denx.de> you wrote:
>
> > U-Boot 1.3.2-rc2-g02e4b4e3 (Feb 28 2008 - 16:46:26)
>   ^^^^^^^^^^^^^
> That's very old.

Indeed. That's why I included this information as data point.

> From my understanding this worked at some point on the CPCI750 as well. 

Ah! You didn't mention this before. That's bad.

> Perhaps you could give the TOT U-Boot version a try on your board used above. 
> My guess is that this will fail as well.

Correct.

> I tried to locate a problem that was introduced at some time but couldn't 
> locate it (no, I didn't use git bisect). But looking at the current code this 

Well, I did bisect it, and found that it's an "interesting" issue, as
inbettween there obviously were some versions where it didn't work at
all; i. e.:

old:

	IDE:   Bus 0: ..OK
	  Device 0: Model: HITACHI_DK23DA-20 Firm: 00J2A0A1 Ser#: 12Y0MN
		    Type: Hard Disk
		    Capacity: 19077.1 MB = 18.6 GB (39070080 x 512)
	  Device 1: not available

then:

	IDE:   Bus 0: OK 
	  Device 0: Model: HITACHI_DK23DA-20 Firm: 00J2A0A1 Ser#: 12Y0MN
	Vendor: HITACHI_DK23DA-20 Prod.: 12Y0MN Rev: 00J2A0A1
		    Type: Hard Disk
		    Capacity: 19077.1 MB = 18.6 GB (39070080 x 512)
	  Device 1: not available

then:

	IDE:   Bus 0: OK 
	  Device 0: not available
	  Device 1: not available

	This was caused by:

	574b319512b13e10800f0045e39b993f4ca25e42 is first bad commit
	commit 574b319512b13e10800f0045e39b993f4ca25e42
	Author: Detlev Zundel <dzu@denx.de>
	Date:   Mon May 5 16:11:21 2008 +0200

	    Fix disk type output in disk/part.c
	    
	    Signed-off-by: Detlev Zundel <dzu@denx.de>

	The bug is here:

	-       if (dev_desc->type==DEV_TYPE_UNKNOWN) {
	-               puts ("not available\n");
	-               return;
	-       }
	-       if (dev_desc->if_type==IF_TYPE_SCSI)  {
	-               printf ("(%d:%d) ", dev_desc->target,dev_desc->lun);
	-       }
	-       if (dev_desc->if_type==IF_TYPE_IDE) {
	-               printf ("Model: %s Firm: %s Ser#: %s\n",
	+       switch (dev_desc->type) {
	+       case IF_TYPE_SCSI:
	...
	+       case DEV_TYPE_UNKNOWN:
	+       default:
	+               puts ("not available\n");
	+               return;

        The initial test was on "dev_desc->type", but this was
        "optimized" into the switch - not noticing that the switch
        tests for "dev_desc->if_type" which can only take "IF_*"
        values, but no "DEV_*" values.

	Later, the switch() was fixed into "switch (dev_desc->if_type)",
	but then the DEV_TYPE_UNKNOWN was converted into IF_TYPE_UNKNOWN
	which might have seemed logical at that time, but by that we
	lost all trace of the original test; see 

	commit 8ec6e332eace0ee78c71ee5f645d12b06813b86f
	Author: Tor Krill <tor@excito.com>
	Date:   Thu May 29 11:10:30 2008 +0200

	    Fix incorrect switch for IF_TYPE in part.c


and finally:

	IDE:   Bus 0: OK 
	  Device 0: Model: HITACHI_DK23DA-20 Firm: 00J2A0A1 Ser#: 12Y0MN
		    Type: Hard Disk
		    Capacity: 19077.1 MB = 18.6 GB (39070080 x 512)
	  Device 1: Model:  Firm:  Ser#: 
		    Type: # 1F #
		    Capacity: not available


Hey, that's fun, isn't it :-(


> just can't work as is for the 2nd drive. And I still think my fix is ok.

I don't think so. Could you please try the patch in the following
mail? Thanks in advance.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Democracy is mob rule, but with income taxes.

[U-Boot] [PATCH] IDE: bail out of dev_print() for unknow device types

[Wolfgang Denk]

Commit 574b319512 introduced a subtle bug by mixing a list of tests
for "dev_desc->type" and "dev_desc->if_type" into one switch(), which
then mostly did not work because "dev_desc->type" cannot take any
"IF_*" type values. A later fix in commit 8ec6e332ea changed the
switch() into testing "dev_desc->if_type", but at this point the
initial test for unknown device types was completely lost, which
resulted in output like that for IDE ports without device attached:

  Device 1: Model:  Firm:  Ser#:
            Type: # 1F #
            Capacity: not available

This patch re-introduces the missing test for unknown device types.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
---
 disk/part.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/disk/part.c b/disk/part.c
index c777493..39c1b42 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -114,6 +114,11 @@ void dev_print (block_dev_desc_t *dev_desc)
 	lbaint_t lba512;
 #endif
 
+	if (dev_desc->type==DEV_TYPE_UNKNOWN) {
+		puts ("not available\n");
+		return;
+	}
+
 	switch (dev_desc->if_type) {
 	case IF_TYPE_SCSI:
 		printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
-- 
1.6.0.6

[U-Boot] [PATCH v2] IDE: bail out of dev_print() for unknown device types

[Wolfgang Denk]

Commit 574b319512 introduced a subtle bug by mixing a list of tests
for "dev_desc->type" and "dev_desc->if_type" into one switch(), which
then mostly did not work because "dev_desc->type" cannot take any
"IF_*" type values. A later fix in commit 8ec6e332ea changed the
switch() into testing "dev_desc->if_type", but at this point the
initial test for unknown device types was completely lost, which
resulted in output like that for IDE ports without device attached:

  Device 1: Model:  Firm:  Ser#:
            Type: # 1F #
            Capacity: not available

This patch re-introduces the missing test for unknown device types.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
---
Oh those **** typos!

 disk/part.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/disk/part.c b/disk/part.c
index c777493..39c1b42 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -114,6 +114,11 @@ void dev_print (block_dev_desc_t *dev_desc)
 	lbaint_t lba512;
 #endif
 
+	if (dev_desc->type==DEV_TYPE_UNKNOWN) {
+		puts ("not available\n");
+		return;
+	}
+
 	switch (dev_desc->if_type) {
 	case IF_TYPE_SCSI:
 		printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
-- 
1.6.0.6

[U-Boot] [PATCH v2] IDE: bail out of dev_print() for unknown device types

[Stefan Roese]

Hi Wolfgang,

On Thursday 14 May 2009 22:59:49 Wolfgang Denk wrote:
> Commit 574b319512 introduced a subtle bug by mixing a list of tests
> for "dev_desc->type" and "dev_desc->if_type" into one switch(), which
> then mostly did not work because "dev_desc->type" cannot take any
> "IF_*" type values. A later fix in commit 8ec6e332ea changed the
> switch() into testing "dev_desc->if_type", but at this point the
> initial test for unknown device types was completely lost, which
> resulted in output like that for IDE ports without device attached:
>
>   Device 1: Model:  Firm:  Ser#:
>             Type: # 1F #
>             Capacity: not available
>
> This patch re-introduces the missing test for unknown device types.
>
> Signed-off-by: Wolfgang Denk <wd@denx.de>
> Cc: Stefan Roese <sr@denx.de>
> Cc: Detlev Zundel <dzu@denx.de>

Tested-by: Stefan Roese <sr@denx.de>

One small nitpicking comment though below.

> ---
> Oh those **** typos!
>
>  disk/part.c |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)
>
> diff --git a/disk/part.c b/disk/part.c
> index c777493..39c1b42 100644
> --- a/disk/part.c
> +++ b/disk/part.c
> @@ -114,6 +114,11 @@ void dev_print (block_dev_desc_t *dev_desc)
>  	lbaint_t lba512;
>  #endif
>
> +	if (dev_desc->type==DEV_TYPE_UNKNOWN) {

	if (dev_desc->type == DEV_TYPE_UNKNOWN) {

Thanks.

Best regards,
Stefan

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================

[U-Boot] [PATCH v2] IDE: bail out of dev_print() for unknown device types

[Wolfgang Denk]

Dear Stefan Roese,

In message <200905150727.09965.sr@denx.de> you wrote:
>
> > This patch re-introduces the missing test for unknown device types.
> >
> > Signed-off-by: Wolfgang Denk <wd@denx.de>
> > Cc: Stefan Roese <sr@denx.de>
> > Cc: Detlev Zundel <dzu@denx.de>
> 
> Tested-by: Stefan Roese <sr@denx.de>

So it's working for you, too?  Good :-)

> One small nitpicking comment though below.
...
> > +	if (dev_desc->type==DEV_TYPE_UNKNOWN) {
> 
> 	if (dev_desc->type == DEV_TYPE_UNKNOWN) {

OK, will fix.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Quote from the Boss... "I didn't say it was your fault.  I said I was
going to blame it on you."

[U-Boot] [PATCH v3] IDE: bail out of dev_print() for unknown device types

[Wolfgang Denk]

Commit 574b319512 introduced a subtle bug by mixing a list of tests
for "dev_desc->type" and "dev_desc->if_type" into one switch(), which
then mostly did not work because "dev_desc->type" cannot take any
"IF_*" type values. A later fix in commit 8ec6e332ea changed the
switch() into testing "dev_desc->if_type", but at this point the
initial test for unknown device types was completely lost, which
resulted in output like that for IDE ports without device attached:

  Device 1: Model:  Firm:  Ser#:
            Type: # 1F #
            Capacity: not available

This patch re-introduces the missing test for unknown device types.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
---
v2: fix typo
v3: fix white space

 disk/part.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/disk/part.c b/disk/part.c
index c777493..b92fb45 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -114,6 +114,11 @@ void dev_print (block_dev_desc_t *dev_desc)
 	lbaint_t lba512;
 #endif
 
+	if (dev_desc->type == DEV_TYPE_UNKNOWN) {
+		puts ("not available\n");
+		return;
+	}
+
 	switch (dev_desc->if_type) {
 	case IF_TYPE_SCSI:
 		printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
-- 
1.6.0.6

[U-Boot] [PATCH v2] IDE: bail out of dev_print() for unknown device types

[Stefan Roese]

On Friday 15 May 2009 09:27:50 Wolfgang Denk wrote:
> > > This patch re-introduces the missing test for unknown device types.
> > >
> > > Signed-off-by: Wolfgang Denk <wd@denx.de>
> > > Cc: Stefan Roese <sr@denx.de>
> > > Cc: Detlev Zundel <dzu@denx.de>
> >
> > Tested-by: Stefan Roese <sr@denx.de>
>
> So it's working for you, too?  Good :-)

Yes. Thanks.

Best regards,
Stefan

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================

[U-Boot] [PATCH v3] IDE: bail out of dev_print() for unknown device types

[Wolfgang Denk]

In message <1242372478-8446-1-git-send-email-wd@denx.de> you wrote:
> Commit 574b319512 introduced a subtle bug by mixing a list of tests
> for "dev_desc->type" and "dev_desc->if_type" into one switch(), which
> then mostly did not work because "dev_desc->type" cannot take any
> "IF_*" type values. A later fix in commit 8ec6e332ea changed the
> switch() into testing "dev_desc->if_type", but at this point the
> initial test for unknown device types was completely lost, which
> resulted in output like that for IDE ports without device attached:
> 
>   Device 1: Model:  Firm:  Ser#:
>             Type: # 1F #
>             Capacity: not available
> 
> This patch re-introduces the missing test for unknown device types.
> 
> Signed-off-by: Wolfgang Denk <wd@denx.de>
> Cc: Stefan Roese <sr@denx.de>
> Cc: Detlev Zundel <dzu@denx.de>
> ---
> v2: fix typo
> v3: fix white space
> 
>  disk/part.c |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)

Applied.


Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
If some day we are defeated, well, war has  its  fortunes,  good  and
bad.
	-- Commander Kor, "Errand of Mercy", stardate 3201.7