From: Johannes Berg <[email protected]> There's no need for this to be only __read_mostly, since it's only written in a single way depending on the module parameter, so that can be moved into the module's __init function, and the ops can be __ro_after_init.
This is a little bit safer since it means the ops can't be overwritten (accidentally or otherwise), which would otherwise cause an arbitrary function or bad pointer to be called. Signed-off-by: Johannes Berg <[email protected]> --- drivers/net/wireless/intel/iwlegacy/3945-mac.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/intel/iwlegacy/3945-mac.c b/drivers/net/wireless/intel/iwlegacy/3945-mac.c index 466912eb2d87..e8e65115feba 100644 --- a/drivers/net/wireless/intel/iwlegacy/3945-mac.c +++ b/drivers/net/wireless/intel/iwlegacy/3945-mac.c @@ -3469,7 +3469,7 @@ static struct attribute_group il3945_attribute_group = { .attrs = il3945_sysfs_entries, }; -static struct ieee80211_ops il3945_mac_ops __read_mostly = { +static struct ieee80211_ops il3945_mac_ops __ro_after_init = { .tx = il3945_mac_tx, .start = il3945_mac_start, .stop = il3945_mac_stop, @@ -3627,15 +3627,6 @@ il3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) il->cmd_queue = IL39_CMD_QUEUE_NUM; - /* - * Disabling hardware scan means that mac80211 will perform scans - * "the hard way", rather than using device's scan. - */ - if (il3945_mod_params.disable_hw_scan) { - D_INFO("Disabling hw_scan\n"); - il3945_mac_ops.hw_scan = NULL; - } - D_INFO("*** LOAD DRIVER ***\n"); il->cfg = cfg; il->ops = &il3945_ops; @@ -3913,6 +3904,15 @@ il3945_init(void) pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n"); pr_info(DRV_COPYRIGHT "\n"); + /* + * Disabling hardware scan means that mac80211 will perform scans + * "the hard way", rather than using device's scan. + */ + if (il3945_mod_params.disable_hw_scan) { + pr_info("hw_scan is disabled\n"); + il3945_mac_ops.hw_scan = NULL; + } + ret = il3945_rate_control_register(); if (ret) { pr_err("Unable to register rate control algorithm: %d\n", ret); -- 2.9.3
