From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/drivers/usb/misc/ftdi-elan.c | 39 ++++-----------------------------------
1 files changed, 4 insertions(+), 35 deletions(-)
diff --git a/kernel/drivers/usb/misc/ftdi-elan.c b/kernel/drivers/usb/misc/ftdi-elan.c
index adc2a38..157b31d 100644
--- a/kernel/drivers/usb/misc/ftdi-elan.c
+++ b/kernel/drivers/usb/misc/ftdi-elan.c
@@ -334,7 +334,8 @@
*respond->result = -ESHUTDOWN;
*respond->value = 0;
complete(&respond->wait_completion);
- } mutex_unlock(&ftdi->u132_lock);
+ }
+ mutex_unlock(&ftdi->u132_lock);
}
static void ftdi_elan_abandon_targets(struct usb_ftdi *ftdi)
@@ -764,7 +765,8 @@
struct u132_command *command = &ftdi->command[COMMAND_MASK &
i++];
total_size += 5 + command->follows;
- } return total_size;
+ }
+ return total_size;
}
static int ftdi_elan_command_engine(struct usb_ftdi *ftdi)
@@ -916,7 +918,6 @@
int bytes_read = 0;
int retry_on_empty = 1;
int retry_on_timeout = 3;
- int empty_packets = 0;
read:{
int packet_bytes = 0;
int retval = usb_bulk_msg(ftdi->udev,
@@ -961,31 +962,6 @@
dev_err(&ftdi->udev->dev, "error = %d with packet_bytes = %d with total %d bytes%s\n",
retval, packet_bytes, bytes_read, diag);
return retval;
- } else if (packet_bytes == 2) {
- unsigned char s0 = ftdi->bulk_in_buffer[0];
- unsigned char s1 = ftdi->bulk_in_buffer[1];
- empty_packets += 1;
- if (s0 == 0x31 && s1 == 0x60) {
- if (retry_on_empty-- > 0) {
- goto more;
- } else
- return 0;
- } else if (s0 == 0x31 && s1 == 0x00) {
- if (retry_on_empty-- > 0) {
- goto more;
- } else
- return 0;
- } else {
- if (retry_on_empty-- > 0) {
- goto more;
- } else
- return 0;
- }
- } else if (packet_bytes == 1) {
- if (retry_on_empty-- > 0) {
- goto more;
- } else
- return 0;
} else {
if (retry_on_empty-- > 0) {
goto more;
@@ -2050,13 +2026,6 @@
goto read;
} else
goto reset;
- } else if (s1 == 0x31 && s2 == 0x60) {
- if (read_stop-- > 0) {
- goto read;
- } else {
- dev_err(&ftdi->udev->dev, "retry limit reached\n");
- continue;
- }
} else {
if (read_stop-- > 0) {
goto read;
--
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