From: Johannes Berg <[email protected]> Upstream commit 4fc79db178f0a0ede479b4713e00df2d106028b3.
If the device is not started, we can't read its SRAM and attempting to do so will cause issues. Protect the debugfs read. Cc: [email protected] Signed-off-by: Johannes Berg <[email protected]> Signed-off-by: John W. Linville <[email protected]> --- drivers/net/wireless/iwlwifi/iwl-debugfs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c index 7f97dec..5000690 100644 --- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c +++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c @@ -128,6 +128,9 @@ static ssize_t iwl_dbgfs_sram_read(struct file *file, const struct fw_img *img; size_t bufsz; + if (!iwl_is_ready_rf(priv)) + return -EAGAIN; + /* default is to dump the entire data segment */ if (!priv->dbgfs_sram_offset && !priv->dbgfs_sram_len) { priv->dbgfs_sram_offset = 0x800000; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
