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net: wirelesse: wcn36xx: pull allocation outside of critical section
Commit [3469adb3
: fix potential NULL pointer dereference] introduced
a check of msg_ind allocation, but omitted allocation of msg_ind->msg.
Moreover, it introduced two if statements, which looked a bit clunky.
This commit moves allocation code outside of the critical section so
there's no need to dance around mutex_unlock, and adds the missing
allocation check.
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
parent
623c43875f
commit
90accd0b47
@ -2060,22 +2060,28 @@ static void wcn36xx_smd_rsp_process(struct wcn36xx *wcn, void *buf, size_t len)
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case WCN36XX_HAL_OTA_TX_COMPL_IND:
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case WCN36XX_HAL_MISSED_BEACON_IND:
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case WCN36XX_HAL_DELETE_STA_CONTEXT_IND:
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mutex_lock(&wcn->hal_ind_mutex);
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msg_ind = kmalloc(sizeof(*msg_ind), GFP_KERNEL);
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if (msg_ind) {
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msg_ind->msg_len = len;
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msg_ind->msg = kmalloc(len, GFP_KERNEL);
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memcpy(msg_ind->msg, buf, len);
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list_add_tail(&msg_ind->list, &wcn->hal_ind_queue);
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queue_work(wcn->hal_ind_wq, &wcn->hal_ind_work);
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wcn36xx_dbg(WCN36XX_DBG_HAL, "indication arrived\n");
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}
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mutex_unlock(&wcn->hal_ind_mutex);
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if (msg_ind)
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if (!msg_ind)
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goto nomem;
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msg_ind->msg_len = len;
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msg_ind->msg = kmalloc(len, GFP_KERNEL);
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if (!msg_ind->msg) {
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kfree(msg_ind);
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nomem:
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/*
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* FIXME: Do something smarter then just
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* printing an error.
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*/
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wcn36xx_err("Run out of memory while handling SMD_EVENT (%d)\n",
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msg_header->msg_type);
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break;
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/* FIXME: Do something smarter then just printing an error. */
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wcn36xx_err("Run out of memory while handling SMD_EVENT (%d)\n",
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msg_header->msg_type);
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}
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memcpy(msg_ind->msg, buf, len);
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mutex_lock(&wcn->hal_ind_mutex);
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list_add_tail(&msg_ind->list, &wcn->hal_ind_queue);
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queue_work(wcn->hal_ind_wq, &wcn->hal_ind_work);
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mutex_unlock(&wcn->hal_ind_mutex);
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wcn36xx_dbg(WCN36XX_DBG_HAL, "indication arrived\n");
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break;
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default:
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wcn36xx_err("SMD_EVENT (%d) not supported\n",
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