wifi: wlcore: sdio: Rate limit wl12xx_sdio_raw_{read,write}() failures warns

When these failures happen, the warning and call trace is printed which is
excessive. Instead, just print the error but rate limited to prevent warns
to unnecessarily pollute the kernel log buffer and make the serial console
practically unusable.

For example, on an AM625 BeaglePlay board where accessing a SDIO WiFi chip
fails with an -110 (ETIMEDOUT) error:

  $ dmesg | grep "sdio write\|read failed (-110)" | wc -l
  39

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240228101042.728881-1-javierm@redhat.com

diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c
index 966edb3..92fb5b8 100644 (file)
--- a/drivers/net/wireless/ti/wlcore/sdio.c
+++ b/drivers/net/wireless/ti/wlcore/sdio.c
@@ -74,8 +74,8 @@ static int __must_check wl12xx_sdio_raw_read(struct device *child, int addr,
 
        sdio_release_host(func);
 
-       if (WARN_ON(ret))
-               dev_err(child->parent, "sdio read failed (%d)\n", ret);
+       if (ret)
+               dev_err_ratelimited(child->parent, "sdio read failed (%d)\n", ret);
 
        if (unlikely(dump)) {
                printk(KERN_DEBUG "wlcore_sdio: READ from 0x%04x\n", addr);
@@ -119,8 +119,8 @@ static int __must_check wl12xx_sdio_raw_write(struct device *child, int addr,
 
        sdio_release_host(func);
 
-       if (WARN_ON(ret))
-               dev_err(child->parent, "sdio write failed (%d)\n", ret);
+       if (ret)
+               dev_err_ratelimited(child->parent, "sdio write failed (%d)\n", ret);
 
        return ret;
 }