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Commit 4618fd30 authored by Stefan Richter's avatar Stefan Richter
Browse files

ieee1394: sbp2: use a better wildcard for blacklist 



0x000000 could be a valid value to match against, but anything bigger
than 0xffffff cannot.

Signed-off-by: default avatarStefan Richter <stefanr@s5r6.in-berlin.de>
parent dcb71129

drivers/ieee1394/sbp2.c

+8 −12
Original line number Diff line number Diff line
@@ -308,6 +308,8 @@ static struct scsi_host_template sbp2_shost_template = { 
	.sdev_attrs		 = sbp2_sysfs_sdev_attrs,

};



/* for match-all entries in sbp2_workarounds_table */

#define SBP2_ROM_VALUE_WILDCARD 0x1000000



/*

 * List of devices with known bugs.
@@ -329,22 +331,14 @@ static const struct { 
	},

	/* Initio bridges, actually only needed for some older ones */ {

		.firmware_revision	= 0x000200,

		.model_id		= SBP2_ROM_VALUE_WILDCARD,

		.workarounds		= SBP2_WORKAROUND_INQUIRY_36,

	},

	/* Symbios bridge */ {

		.firmware_revision	= 0xa0b800,

		.model_id		= SBP2_ROM_VALUE_WILDCARD,

		.workarounds		= SBP2_WORKAROUND_128K_MAX_TRANS,

	},

	/*

	 * Note about the following Apple iPod blacklist entries:

	 *

	 * There are iPods (2nd gen, 3rd gen) with model_id==0.  Since our

	 * matching logic treats 0 as a wildcard, we cannot match this ID

	 * without rewriting the matching routine.  Fortunately these iPods

	 * do not feature the read_capacity bug according to one report.

	 * Read_capacity behaviour as well as model_id could change due to

	 * Apple-supplied firmware updates though.

	 */

	/* iPod 4th generation */ {

		.firmware_revision	= 0x0a2700,

		.model_id		= 0x000021,
@@ -1307,11 +1301,13 @@ static void sbp2_parse_unit_directory(struct sbp2_lu *lu, 


	if (!(workarounds & SBP2_WORKAROUND_OVERRIDE))

		for (i = 0; i < ARRAY_SIZE(sbp2_workarounds_table); i++) {

			if (sbp2_workarounds_table[i].firmware_revision &&

			if (sbp2_workarounds_table[i].firmware_revision !=

			    SBP2_ROM_VALUE_WILDCARD &&

			    sbp2_workarounds_table[i].firmware_revision !=

			    (firmware_revision & 0xffff00))

				continue;

			if (sbp2_workarounds_table[i].model_id &&

			if (sbp2_workarounds_table[i].model_id !=

			    SBP2_ROM_VALUE_WILDCARD &&

			    sbp2_workarounds_table[i].model_id != ud->model_id)

				continue;

			workarounds |= sbp2_workarounds_table[i].workarounds;