From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Fri, 24 Mar 2017 19:34:20 +0000 (-0700)
Subject: Input: synaptics-rmi4 - fix endianness issue in SMBus transport
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2593cd1189a2a38a17c97abcd847f28f8a4617be;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

Input: synaptics-rmi4 - fix endianness issue in SMBus transport

The mapping table holds address in LE form, so we should convert it
to CPU when comparing it.

Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---

diff --git a/drivers/input/rmi4/rmi_smbus.c b/drivers/input/rmi4/rmi_smbus.c
index 76752555d809..6bb67baa1b77 100644
--- a/drivers/input/rmi4/rmi_smbus.c
+++ b/drivers/input/rmi4/rmi_smbus.c
@@ -89,17 +89,17 @@ static int rmi_smb_get_command_code(struct rmi_transport_dev *xport,
 
 	mutex_lock(&rmi_smb->mappingtable_mutex);
 	for (i = 0; i < RMI_SMB2_MAP_SIZE; i++) {
-		if (rmi_smb->mapping_table[i].rmiaddr == rmiaddr) {
+		struct mapping_table_entry *entry = &rmi_smb->mapping_table[i];
+
+		if (le16_to_cpu(entry->rmiaddr) == rmiaddr) {
 			if (isread) {
-				if (rmi_smb->mapping_table[i].readcount
-							== bytecount) {
+				if (entry->readcount == bytecount) {
 					*commandcode = i;
 					retval = 0;
 					goto exit;
 				}
 			} else {
-				if (rmi_smb->mapping_table[i].flags &
-							RMI_SMB2_MAP_FLAGS_WE) {
+				if (entry->flags & RMI_SMB2_MAP_FLAGS_WE) {
 					*commandcode = i;
 					retval = 0;
 					goto exit;