linux-kernel - [20/75] libata: Use integer return value for atapi_command_packet

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Message-ID: <lsq.1366640759.533505146@decadent.org.uk>
Date:	Mon, 22 Apr 2013 15:25:59 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Jeff Garzik" <jgarzik@...hat.com>,
	"Shan Hai" <shan.hai@...driver.com>
Subject: [20/75] libata: Use integer return value for atapi_command_packet_set

3.2.44-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Shan Hai <shan.hai@...driver.com>

commit d8668fcb0b257d9fdcfbe5c172a99b8d85e1cd82 upstream.

The function returns type of ATAPI drives so it should return integer value.
The commit 4dce8ba94c7 (libata: Use 'bool' return value for ata_id_XXX) since
v2.6.39 changed the type of return value from int to bool, the change would
cause all of the ATAPI class drives to be treated as TYPE_TAPE and the
max_sectors of the drives to be set to 65535 because of the commit
f8d8e5799b7(libata: increase 128 KB / cmd limit for ATAPI tape drives), for the
function would return true for all ATAPI class drives and the TYPE_TAPE is
defined as 0x01.

Signed-off-by: Shan Hai <shan.hai@...driver.com>
Signed-off-by: Jeff Garzik <jgarzik@...hat.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 include/linux/ata.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -937,7 +937,7 @@ static inline int atapi_cdb_len(const u1
 	}
 }

-static inline bool atapi_command_packet_set(const u16 *dev_id)
+static inline int atapi_command_packet_set(const u16 *dev_id)
 {
 	return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
 }

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