From: Phil Elwell <phil@raspberrypi.com>
To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Arnd Bergmann <arnd@arndb.de>,
Dan Carpenter <dan.carpenter@oracle.com>,
bcm-kernel-feedback-list@broadcom.com,
linux-rpi-kernel@lists.infradead.org,
linux-arm-kernel@lists.infradead.org, devel@driverdev.osuosl.org
Cc: Phil Elwell <phil@raspberrypi.com>
Subject: [PATCH 1/2] staging: vchiq: Fix bulk userdata handling
Date: Mon, 4 Jan 2021 12:09:27 +0000 [thread overview]
Message-ID: <20210104120929.294063-2-phil@raspberrypi.com> (raw)
In-Reply-To: <20210104120929.294063-1-phil@raspberrypi.com>
The addition of the local 'userdata' pointer to
vchiq_irq_queue_bulk_tx_rx omitted the case where neither BLOCKING nor
WAITING modes are used, in which case the value provided by the
caller is replaced with a NULL.
Fixes: 4184da4f316a ("staging: vchiq: fix __user annotations")
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index f500a7043805..2a8883673ba1 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -958,7 +958,7 @@ static int vchiq_irq_queue_bulk_tx_rx(struct vchiq_instance *instance,
struct vchiq_service *service;
struct bulk_waiter_node *waiter = NULL;
bool found = false;
- void *userdata = NULL;
+ void *userdata;
int status = 0;
int ret;
@@ -997,6 +997,8 @@ static int vchiq_irq_queue_bulk_tx_rx(struct vchiq_instance *instance,
"found bulk_waiter %pK for pid %d", waiter,
current->pid);
userdata = &waiter->bulk_waiter;
+ } else {
+ userdata = args->userdata;
}
/*
--
2.25.1
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next prev parent reply other threads:[~2021-01-04 12:11 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-04 12:09 [PATCH 0/2] A brace of vchiq bulk transfer fixes Phil Elwell
2021-01-04 12:09 ` Phil Elwell [this message]
2021-01-04 17:37 ` [PATCH 1/2] staging: vchiq: Fix bulk userdata handling Stefan Wahren
2021-01-04 18:31 ` Dan Carpenter
2021-01-04 19:26 ` Phil Elwell
2021-01-05 11:01 ` Dan Carpenter
2021-01-05 11:53 ` Phil Elwell
2021-01-05 13:22 ` Dan Carpenter
2021-01-05 15:13 ` Arnd Bergmann
2021-01-04 12:09 ` [PATCH 2/2] staging: vchiq: Fix bulk transfers on 64-bit builds Phil Elwell
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