dmaengine: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index f681df8..331f863 100644 (file)
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -364,9 +364,9 @@ static void imxdma_disable_hw(struct imxdma_channel *imxdmac)
        local_irq_restore(flags);
 }
 
-static void imxdma_watchdog(unsigned long data)
+static void imxdma_watchdog(struct timer_list *t)
 {
-       struct imxdma_channel *imxdmac = (struct imxdma_channel *)data;
+       struct imxdma_channel *imxdmac = from_timer(imxdmac, t, watchdog);
        struct imxdma_engine *imxdma = imxdmac->imxdma;
        int channel = imxdmac->channel;
 
@@ -1153,9 +1153,7 @@ static int __init imxdma_probe(struct platform_device *pdev)
                        }
 
                        imxdmac->irq = irq + i;
-                       init_timer(&imxdmac->watchdog);
-                       imxdmac->watchdog.function = &imxdma_watchdog;
-                       imxdmac->watchdog.data = (unsigned long)imxdmac;
+                       timer_setup(&imxdmac->watchdog, imxdma_watchdog, 0);
                }
 
                imxdmac->imxdma = imxdma;

diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c
index f70cc74..58d4ccd 100644 (file)
--- a/drivers/dma/ioat/dma.c
+++ b/drivers/dma/ioat/dma.c
@@ -474,7 +474,7 @@ int ioat_check_space_lock(struct ioatdma_chan *ioat_chan, int num_descs)
        if (time_is_before_jiffies(ioat_chan->timer.expires)
            && timer_pending(&ioat_chan->timer)) {
                mod_timer(&ioat_chan->timer, jiffies + COMPLETION_TIMEOUT);
-               ioat_timer_event((unsigned long)ioat_chan);
+               ioat_timer_event(&ioat_chan->timer);
        }
 
        return -ENOMEM;
@@ -862,9 +862,9 @@ static void check_active(struct ioatdma_chan *ioat_chan)
                mod_timer(&ioat_chan->timer, jiffies + IDLE_TIMEOUT);
 }
 
-void ioat_timer_event(unsigned long data)
+void ioat_timer_event(struct timer_list *t)
 {
-       struct ioatdma_chan *ioat_chan = to_ioat_chan((void *)data);
+       struct ioatdma_chan *ioat_chan = from_timer(ioat_chan, t, timer);
        dma_addr_t phys_complete;
        u64 status;
 

diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index 56200ee..1ab42ec 100644 (file)
--- a/drivers/dma/ioat/dma.h
+++ b/drivers/dma/ioat/dma.h
@@ -406,10 +406,9 @@ enum dma_status
 ioat_tx_status(struct dma_chan *c, dma_cookie_t cookie,
                struct dma_tx_state *txstate);
 void ioat_cleanup_event(unsigned long data);
-void ioat_timer_event(unsigned long data);
+void ioat_timer_event(struct timer_list *t);
 int ioat_check_space_lock(struct ioatdma_chan *ioat_chan, int num_descs);
 void ioat_issue_pending(struct dma_chan *chan);
-void ioat_timer_event(unsigned long data);
 
 /* IOAT Init functions */
 bool is_bwd_ioat(struct pci_dev *pdev);

diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c
index 93e006c..2f31d3d 100644 (file)
--- a/drivers/dma/ioat/init.c
+++ b/drivers/dma/ioat/init.c
@@ -760,7 +760,7 @@ ioat_init_channel(struct ioatdma_device *ioat_dma,
        dma_cookie_init(&ioat_chan->dma_chan);
        list_add_tail(&ioat_chan->dma_chan.device_node, &dma->channels);
        ioat_dma->idx[idx] = ioat_chan;
-       setup_timer(&ioat_chan->timer, ioat_timer_event, data);
+       timer_setup(&ioat_chan->timer, ioat_timer_event, 0);
        tasklet_init(&ioat_chan->cleanup_task, ioat_cleanup_event, data);
 }