From 9370bb92b2d16684ee45cf24e879c93c509162da Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 19 Dec 2024 01:47:39 +0000
Subject: [PATCH] add wifi6 8852be driver
---
kernel/drivers/media/dvb-frontends/tc90522.c | 29 ++++++++++++++++++++++++++---
1 files changed, 26 insertions(+), 3 deletions(-)
diff --git a/kernel/drivers/media/dvb-frontends/tc90522.c b/kernel/drivers/media/dvb-frontends/tc90522.c
index 2ad81a4..e83836b 100644
--- a/kernel/drivers/media/dvb-frontends/tc90522.c
+++ b/kernel/drivers/media/dvb-frontends/tc90522.c
@@ -685,10 +685,33 @@
p += new_msgs[j].len;
}
- if (i < num)
+ if (i < num) {
ret = -ENOMEM;
- else
+ } else if (!state->cfg.split_tuner_read_i2c || rd_num == 0) {
ret = i2c_transfer(state->i2c_client->adapter, new_msgs, j);
+ } else {
+ /*
+ * Split transactions at each I2C_M_RD message.
+ * Some of the parent device require this,
+ * such as Friio (see. dvb-usb-gl861).
+ */
+ int from, to;
+
+ ret = 0;
+ from = 0;
+ do {
+ int r;
+
+ to = from + 1;
+ while (to < j && !(new_msgs[to].flags & I2C_M_RD))
+ to++;
+ r = i2c_transfer(state->i2c_client->adapter,
+ &new_msgs[from], to - from);
+ ret = (r <= 0) ? r : ret + r;
+ from = to;
+ } while (from < j && ret > 0);
+ }
+
if (ret >= 0 && ret < j)
ret = -EIO;
kfree(new_msgs);
@@ -781,7 +804,7 @@
adap->owner = THIS_MODULE;
adap->algo = &tc90522_tuner_i2c_algo;
adap->dev.parent = &client->dev;
- strlcpy(adap->name, "tc90522_sub", sizeof(adap->name));
+ strscpy(adap->name, "tc90522_sub", sizeof(adap->name));
i2c_set_adapdata(adap, state);
ret = i2c_add_adapter(adap);
if (ret < 0)
--
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