ACPI: IPMI: replace usage of found with dedicated list iterator variable

To move the list iterator variable into the list_for_each_entry_*()
macro in the future it should be avoided to use the list iterator
variable after the loop body.

To *never* use the list iterator variable after the loop it was
concluded to use a separate iterator variable instead of a
found boolean [1].

This removes the need to use a found variable and simply checking if
the variable was set, can determine if the break/goto was hit.

Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/
Signed-off-by: Jakob Koschel <jakobkoschel@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/acpi_ipmi.c b/drivers/acpi/acpi_ipmi.c
index a5fe292..0555f68 100644 (file)
--- a/drivers/acpi/acpi_ipmi.c
+++ b/drivers/acpi/acpi_ipmi.c
@@ -353,29 +353,27 @@ static void ipmi_flush_tx_msg(struct acpi_ipmi_device *ipmi)
 static void ipmi_cancel_tx_msg(struct acpi_ipmi_device *ipmi,
                               struct acpi_ipmi_msg *msg)
 {
-       struct acpi_ipmi_msg *tx_msg, *temp;
-       bool msg_found = false;
+       struct acpi_ipmi_msg *tx_msg = NULL, *iter, *temp;
        unsigned long flags;
 
        spin_lock_irqsave(&ipmi->tx_msg_lock, flags);
-       list_for_each_entry_safe(tx_msg, temp, &ipmi->tx_msg_list, head) {
-               if (msg == tx_msg) {
-                       msg_found = true;
-                       list_del(&tx_msg->head);
+       list_for_each_entry_safe(iter, temp, &ipmi->tx_msg_list, head) {
+               if (msg == iter) {
+                       tx_msg = iter;
+                       list_del(&iter->head);
                        break;
                }
        }
        spin_unlock_irqrestore(&ipmi->tx_msg_lock, flags);
 
-       if (msg_found)
+       if (tx_msg)
                acpi_ipmi_msg_put(tx_msg);
 }
 
 static void ipmi_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data)
 {
        struct acpi_ipmi_device *ipmi_device = user_msg_data;
-       bool msg_found = false;
-       struct acpi_ipmi_msg *tx_msg, *temp;
+       struct acpi_ipmi_msg *tx_msg = NULL, *iter, *temp;
        struct device *dev = ipmi_device->dev;
        unsigned long flags;
 
@@ -387,16 +385,16 @@ static void ipmi_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data)
        }
 
        spin_lock_irqsave(&ipmi_device->tx_msg_lock, flags);
-       list_for_each_entry_safe(tx_msg, temp, &ipmi_device->tx_msg_list, head) {
-               if (msg->msgid == tx_msg->tx_msgid) {
-                       msg_found = true;
-                       list_del(&tx_msg->head);
+       list_for_each_entry_safe(iter, temp, &ipmi_device->tx_msg_list, head) {
+               if (msg->msgid == iter->tx_msgid) {
+                       tx_msg = iter;
+                       list_del(&iter->head);
                        break;
                }
        }
        spin_unlock_irqrestore(&ipmi_device->tx_msg_lock, flags);
 
-       if (!msg_found) {
+       if (!tx_msg) {
                dev_warn(dev,
                         "Unexpected response (msg id %ld) is returned.\n",
                         msg->msgid);
@@ -482,15 +480,14 @@ err_ref:
 
 static void ipmi_bmc_gone(int iface)
 {
-       struct acpi_ipmi_device *ipmi_device, *temp;
-       bool dev_found = false;
+       struct acpi_ipmi_device *ipmi_device = NULL, *iter, *temp;
 
        mutex_lock(&driver_data.ipmi_lock);
-       list_for_each_entry_safe(ipmi_device, temp,
+       list_for_each_entry_safe(iter, temp,
                                 &driver_data.ipmi_devices, head) {
-               if (ipmi_device->ipmi_ifnum != iface) {
-                       dev_found = true;
-                       __ipmi_dev_kill(ipmi_device);
+               if (iter->ipmi_ifnum != iface) {
+                       ipmi_device = iter;
+                       __ipmi_dev_kill(iter);
                        break;
                }
        }
@@ -500,7 +497,7 @@ static void ipmi_bmc_gone(int iface)
                                        struct acpi_ipmi_device, head);
        mutex_unlock(&driver_data.ipmi_lock);
 
-       if (dev_found) {
+       if (ipmi_device) {
                ipmi_flush_tx_msg(ipmi_device);
                acpi_ipmi_dev_put(ipmi_device);
        }