netdev - [PATCH v2 net-next] ibmvnic: workaround QT Creator/libCPlusPlus segfault

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Message-ID: <20210121220739.GA1486367@localhost.localdomain>
Date:   Fri, 22 Jan 2021 01:07:39 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, drt@...ux.ibm.com, ljp@...ux.ibm.com,
        sukadev@...ux.ibm.com
Subject: [PATCH v2 net-next] ibmvnic: workaround QT Creator/libCPlusPlus
 segfault

My name is Alexey and I've tried to use IDE for kernel development.

QT Creator segfaults while parsing ibmvnic.c which is annoying as it
will start parsing after restart only to crash again.

The workaround is to either exclude ibmvnic.c from list of project files
or to apply dummy ifdef to hide the offending code.

https://bugzilla.redhat.com/show_bug.cgi?id=1886548

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---

	fix modular case

 drivers/net/ethernet/ibm/ibmvnic.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -5080,6 +5080,8 @@ static void ibmvnic_tasklet(struct tasklet_struct *t)
 	unsigned long flags;
 	bool done = false;
 
+	/* workaround QT Creator/libCPlusPlus.so segfault with dummy if */
+#if IS_ENABLED(CONFIG_IBMVNIC)
 	spin_lock_irqsave(&queue->lock, flags);
 	while (!done) {
 		/* Pull all the valid messages off the CRQ */
@@ -5100,6 +5102,7 @@ static void ibmvnic_tasklet(struct tasklet_struct *t)
 	if (atomic_read(&adapter->running_cap_crqs) != 0)
 		adapter->wait_capability = true;
 	spin_unlock_irqrestore(&queue->lock, flags);
+#endif
 }
 
 static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter)