[PATCH 1/5] Input: ambakmi - Convert to use devm_*()
From: Leo Yan <hidden>
Date: 2017-03-26 14:42:35
Also in:
alsa-devel, kvm, linux-input, linux-rtc, lkml
Subsystem:
arm primecell kmi pl050 driver, input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Russell King, Dmitry Torokhov, Linus Torvalds
Convert driver to use devm_*() APIs so rely on driver model core layer to manage resources. This eliminates error path boilerplate and makes code neat. This patch also fixes the memory leakage for 'kmi->io' when remove module. Signed-off-by: Leo Yan <redacted> --- drivers/input/serio/ambakmi.c | 44 ++++++++++--------------------------------- 1 file changed, 10 insertions(+), 34 deletions(-)
diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c
index c6606ca..d4814be 100644
--- a/drivers/input/serio/ambakmi.c
+++ b/drivers/input/serio/ambakmi.c@@ -112,19 +112,11 @@ static int amba_kmi_probe(struct amba_device *dev, { struct amba_kmi_port *kmi; struct serio *io; - int ret; - - ret = amba_request_regions(dev, NULL); - if (ret) - return ret; - - kmi = kzalloc(sizeof(struct amba_kmi_port), GFP_KERNEL); - io = kzalloc(sizeof(struct serio), GFP_KERNEL); - if (!kmi || !io) { - ret = -ENOMEM; - goto out; - } + kmi = devm_kzalloc(&dev->dev, sizeof(*kmi), GFP_KERNEL); + io = devm_kzalloc(&dev->dev, sizeof(*io), GFP_KERNEL); + if (!kmi || !io) + return -ENOMEM; io->id.type = SERIO_8042; io->write = amba_kmi_write;
@@ -136,31 +128,19 @@ static int amba_kmi_probe(struct amba_device *dev, io->dev.parent = &dev->dev; kmi->io = io; - kmi->base = ioremap(dev->res.start, resource_size(&dev->res)); - if (!kmi->base) { - ret = -ENOMEM; - goto out; - } + kmi->base = devm_ioremap_resource(&dev->dev, &dev->res); + if (IS_ERR(kmi->base)) + return PTR_ERR(kmi->base); - kmi->clk = clk_get(&dev->dev, "KMIREFCLK"); - if (IS_ERR(kmi->clk)) { - ret = PTR_ERR(kmi->clk); - goto unmap; - } + kmi->clk = devm_clk_get(&dev->dev, "KMIREFCLK"); + if (IS_ERR(kmi->clk)) + return PTR_ERR(kmi->clk); kmi->irq = dev->irq[0]; amba_set_drvdata(dev, kmi); serio_register_port(kmi->io); return 0; - - unmap: - iounmap(kmi->base); - out: - kfree(kmi); - kfree(io); - amba_release_regions(dev); - return ret; } static int amba_kmi_remove(struct amba_device *dev)
@@ -168,10 +148,6 @@ static int amba_kmi_remove(struct amba_device *dev) struct amba_kmi_port *kmi = amba_get_drvdata(dev); serio_unregister_port(kmi->io); - clk_put(kmi->clk); - iounmap(kmi->base); - kfree(kmi); - amba_release_regions(dev); return 0; }
--
2.7.4