[PATCH] tty: acpi/spcr: QDF2400 E44 checks for wrong OEM revision

[manoj.iyer at canonical.com]

From: Timur Tabi <timur at codeaurora.org>

For Qualcomm Technologies QDF2400 SOCs that are affected by erratum E44,
the ACPI oem_revision field is actually set to 1, not 0.

Fixes: d8a4995bcea1 ("tty: pl011: Work around QDF2400 E44 stuck BUSY bit")

BugLink: https://bugs.launchpad.net/bugs/1674466
Tested-by: Manoj Iyer <manoj.iyer at canonical.com>
Signed-off-by: Timur Tabi <timur at codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
(cherry picked from commit 542ed784671d4678406c77ed6dd01593a0cdbea1)
Signed-off-by: Manoj Iyer <manoj.iyer at canonical.com>
---
 drivers/acpi/spcr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/spcr.c b/drivers/acpi/spcr.c
index 2b5d0fa..2051a8c 100644
--- a/drivers/acpi/spcr.c
+++ b/drivers/acpi/spcr.c
@@ -30,7 +30,7 @@ static bool qdf2400_erratum_44_present(struct acpi_table_header *h)
 		return true;
 
 	if (!memcmp(h->oem_table_id, "QDF2400 ", ACPI_OEM_TABLE_ID_SIZE) &&
-			h->oem_revision == 0)
+			h->oem_revision == 1)
 		return true;
 
 	return false;
-- 
2.10.2