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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 20:53:53 +08:00

cpsw: fix leaking IO mappings

The CPSW driver remaps two different IO regions, but fails to unmap them
both. This patch fixes the issue by calling iounmap in the appropriate
places.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Richard Cochran 2012-11-02 22:25:30 +00:00 committed by David S. Miller
parent a65dd5b236
commit 5250c9694f

View File

@ -1252,14 +1252,12 @@ static int __devinit cpsw_probe(struct platform_device *pdev)
ret = -ENOENT;
goto clean_clk_ret;
}
if (!request_mem_region(priv->cpsw_res->start,
resource_size(priv->cpsw_res), ndev->name)) {
dev_err(priv->dev, "failed request i/o region\n");
ret = -ENXIO;
goto clean_clk_ret;
}
regs = ioremap(priv->cpsw_res->start, resource_size(priv->cpsw_res));
if (!regs) {
dev_err(priv->dev, "unable to map i/o region\n");
@ -1274,16 +1272,14 @@ static int __devinit cpsw_probe(struct platform_device *pdev)
if (!priv->cpsw_wr_res) {
dev_err(priv->dev, "error getting i/o resource\n");
ret = -ENOENT;
goto clean_clk_ret;
goto clean_iomap_ret;
}
if (!request_mem_region(priv->cpsw_wr_res->start,
resource_size(priv->cpsw_wr_res), ndev->name)) {
dev_err(priv->dev, "failed request i/o region\n");
ret = -ENXIO;
goto clean_clk_ret;
goto clean_iomap_ret;
}
regs = ioremap(priv->cpsw_wr_res->start,
resource_size(priv->cpsw_wr_res));
if (!regs) {
@ -1326,7 +1322,7 @@ static int __devinit cpsw_probe(struct platform_device *pdev)
if (!priv->dma) {
dev_err(priv->dev, "error initializing dma\n");
ret = -ENOMEM;
goto clean_iomap_ret;
goto clean_wr_iomap_ret;
}
priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
@ -1407,11 +1403,13 @@ clean_dma_ret:
cpdma_chan_destroy(priv->txch);
cpdma_chan_destroy(priv->rxch);
cpdma_ctlr_destroy(priv->dma);
clean_iomap_ret:
iounmap(priv->regs);
clean_wr_iomap_ret:
iounmap(priv->wr_regs);
clean_cpsw_wr_iores_ret:
release_mem_region(priv->cpsw_wr_res->start,
resource_size(priv->cpsw_wr_res));
clean_iomap_ret:
iounmap(priv->regs);
clean_cpsw_iores_ret:
release_mem_region(priv->cpsw_res->start,
resource_size(priv->cpsw_res));
@ -1442,6 +1440,7 @@ static int __devexit cpsw_remove(struct platform_device *pdev)
iounmap(priv->regs);
release_mem_region(priv->cpsw_res->start,
resource_size(priv->cpsw_res));
iounmap(priv->wr_regs);
release_mem_region(priv->cpsw_wr_res->start,
resource_size(priv->cpsw_wr_res));
pm_runtime_disable(&pdev->dev);