change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/drivers/dma/timb_dma.c
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@@ -1,15 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * timb_dma.c timberdale FPGA DMA driver
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  * Copyright (c) 2010 Intel Corporation
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  */
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 /* Supports:
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@@ -96,7 +88,7 @@
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 	struct dma_device	dma;
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 	void __iomem		*membase;
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 	struct tasklet_struct	tasklet;
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-	struct timb_dma_chan	channels[0];
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+	struct timb_dma_chan	channels[];
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 };
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 static struct device *chan2dev(struct dma_chan *chan)
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@@ -571,9 +563,9 @@
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 	return 0;
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 }
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-static void td_tasklet(unsigned long data)
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+static void td_tasklet(struct tasklet_struct *t)
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 {
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-	struct timb_dma *td = (struct timb_dma *)data;
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+	struct timb_dma *td = from_tasklet(td, t, tasklet);
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 	u32 isr;
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 	u32 ipr;
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 	u32 ier;
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@@ -643,8 +635,8 @@
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 		DRIVER_NAME))
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 		return -EBUSY;
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-	td  = kzalloc(sizeof(struct timb_dma) +
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-		sizeof(struct timb_dma_chan) * pdata->nr_channels, GFP_KERNEL);
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+	td  = kzalloc(struct_size(td, channels, pdata->nr_channels),
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+		      GFP_KERNEL);
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 	if (!td) {
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 		err = -ENOMEM;
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 		goto err_release_region;
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@@ -666,7 +658,7 @@
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 	iowrite32(0x0, td->membase + TIMBDMA_IER);
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 	iowrite32(0xFFFFFFFF, td->membase + TIMBDMA_ISR);
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-	tasklet_init(&td->tasklet, td_tasklet, (unsigned long)td);
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+	tasklet_setup(&td->tasklet, td_tasklet);
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 	err = request_irq(irq, td_irq, IRQF_SHARED, DRIVER_NAME, td);
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 	if (err) {