From 33fb934a0992440e3d645d3965e71217c185fd6d Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Mon, 5 Jul 2021 10:20:14 +0200
Subject: [PATCH] USB: serial: cp210x: clean up type detection
Git-commit: 33fb934a0992440e3d645d3965e71217c185fd6d
References: git-fixes
Patch-mainline: v5.15-rc1
Clean up attach somewhat by moving type detection into the quirk helper
and giving it a more generic name.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
drivers/usb/serial/cp210x.c | 23 ++++++++++++-----------
1 file changed, 12 insertions(+), 11 deletions(-)
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index c19073ae3891..a120646b0926 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -2092,11 +2092,21 @@ static int cp210x_get_fw_version(struct usb_serial *serial, u16 value)
return 0;
}
-static void cp210x_determine_quirks(struct usb_serial *serial)
+static void cp210x_determine_type(struct usb_serial *serial)
{
struct cp210x_serial_private *priv = usb_get_serial_data(serial);
int ret;
+ ret = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST,
+ CP210X_GET_PARTNUM, &priv->partnum,
+ sizeof(priv->partnum));
+ if (ret < 0) {
+ dev_warn(&serial->interface->dev,
+ "querying part number failed\n");
+ priv->partnum = CP210X_PARTNUM_UNKNOWN;
+ return;
+ }
+
switch (priv->partnum) {
case CP210X_PARTNUM_CP2102N_QFN28:
case CP210X_PARTNUM_CP2102N_QFN24:
@@ -2121,18 +2131,9 @@ static int cp210x_attach(struct usb_serial *serial)
if (!priv)
return -ENOMEM;
- result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST,
- CP210X_GET_PARTNUM, &priv->partnum,
- sizeof(priv->partnum));
- if (result < 0) {
- dev_warn(&serial->interface->dev,
- "querying part number failed\n");
- priv->partnum = CP210X_PARTNUM_UNKNOWN;
- }
-
usb_set_serial_data(serial, priv);
- cp210x_determine_quirks(serial);
+ cp210x_determine_type(serial);
cp210x_init_max_speed(serial);
result = cp210x_gpio_init(serial);
--
2.26.2