From: Jens Taprogge Date: Thu, 27 Sep 2012 10:37:26 +0000 (+0200) Subject: Staging: ipack: Make ipack_device_register() analogous to device_register(). X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1e91795c8cea4287b155862793271fe6a7737d20;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git Staging: ipack: Make ipack_device_register() analogous to device_register(). ipack_device_register() is no longer creating the struct ipack_device but only registering it. Instead of releasing memory directly the new ipack_device->release callback is called. This is preparational work for later patches. Signed-off-by: Jens Taprogge Signed-off-by: Samuel Iglesias Gonsalvez Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/ipack/bridges/tpci200.c b/drivers/staging/ipack/bridges/tpci200.c index 2f48dd583a4f..ee66129f0b8a 100644 --- a/drivers/staging/ipack/bridges/tpci200.c +++ b/drivers/staging/ipack/bridges/tpci200.c @@ -640,6 +640,23 @@ static int tpci200_install(struct tpci200_board *tpci200) return 0; } +static void tpci200_release_device(struct ipack_device *dev) +{ + kfree(dev); +} + +static int tpci200_create_device(struct tpci200_board *tpci200, int i) +{ + struct ipack_device *dev = + kzalloc(sizeof(struct ipack_device), GFP_KERNEL); + if (!dev) + return -ENOMEM; + dev->slot = i; + dev->bus = tpci200->info->ipack_bus; + dev->release = tpci200_release_device; + return ipack_device_register(dev); +} + static int tpci200_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { @@ -715,7 +732,7 @@ static int tpci200_pci_probe(struct pci_dev *pdev, dev_set_drvdata(&pdev->dev, tpci200); for (i = 0; i < TPCI200_NB_SLOT; i++) - ipack_device_register(tpci200->info->ipack_bus, i); + tpci200_create_device(tpci200, i); return 0; out_err_bus_register: diff --git a/drivers/staging/ipack/ipack.c b/drivers/staging/ipack/ipack.c index ca8cb327df55..d2ed9f546fe9 100644 --- a/drivers/staging/ipack/ipack.c +++ b/drivers/staging/ipack/ipack.c @@ -24,7 +24,7 @@ static void ipack_device_release(struct device *dev) { struct ipack_device *device = to_ipack_dev(dev); kfree(device->id); - kfree(device); + device->release(device); } static inline const struct ipack_device_id * @@ -426,51 +426,39 @@ out: return ret; } -struct ipack_device *ipack_device_register(struct ipack_bus_device *bus, - int slot) +int ipack_device_register(struct ipack_device *dev) { int ret; - struct ipack_device *dev; - - dev = kzalloc(sizeof(struct ipack_device), GFP_KERNEL); - if (!dev) - return NULL; dev->dev.bus = &ipack_bus_type; dev->dev.release = ipack_device_release; - dev->dev.parent = bus->parent; - dev->slot = slot; - dev->bus = bus; + dev->dev.parent = dev->bus->parent; dev_set_name(&dev->dev, "ipack-dev.%u.%u", dev->bus->bus_nr, dev->slot); - if (bus->ops->set_clockrate(dev, 8)) + if (dev->bus->ops->set_clockrate(dev, 8)) dev_warn(&dev->dev, "failed to switch to 8 MHz operation for reading of device ID.\n"); - if (bus->ops->reset_timeout(dev)) + if (dev->bus->ops->reset_timeout(dev)) dev_warn(&dev->dev, "failed to reset potential timeout."); ret = ipack_device_read_id(dev); if (ret < 0) { dev_err(&dev->dev, "error reading device id section.\n"); - kfree(dev); - return NULL; + return ret; } /* if the device supports 32 MHz operation, use it. */ if (dev->speed_32mhz) { - ret = bus->ops->set_clockrate(dev, 32); + ret = dev->bus->ops->set_clockrate(dev, 32); if (ret < 0) dev_err(&dev->dev, "failed to switch to 32 MHz operation.\n"); } ret = device_register(&dev->dev); - if (ret < 0) { + if (ret < 0) kfree(dev->id); - kfree(dev); - return NULL; - } - return dev; + return ret; } EXPORT_SYMBOL_GPL(ipack_device_register); diff --git a/drivers/staging/ipack/ipack.h b/drivers/staging/ipack/ipack.h index 33fdea5e52f6..e2987d58714d 100644 --- a/drivers/staging/ipack/ipack.h +++ b/drivers/staging/ipack/ipack.h @@ -71,6 +71,7 @@ struct ipack_device { struct ipack_addr_space int_space; struct ipack_addr_space mem_space; struct device dev; + void (*release) (struct ipack_device *dev); u8 *id; size_t id_avail; u32 id_vendor; @@ -179,15 +180,17 @@ int ipack_driver_register(struct ipack_driver *edrv, struct module *owner, void ipack_driver_unregister(struct ipack_driver *edrv); /** - * ipack_device_register -- register a new mezzanine device + * ipack_device_register -- register an IPack device with the kernel + * @dev: the new device to register. * - * @bus: ipack bus device it is plugged to. - * @slot: slot position in the bus device. + * Register a new IPack device ("module" in IndustryPack jargon). The call + * is done by the carrier driver. The carrier should populate the fields + * bus and slot of @dev prior to calling this function. The rest of the + * fields will be allocated and populated during registration. * - * Register a new ipack device (mezzanine device). The call is done by - * the carrier device driver. + * Return zero on success or error code on failure. */ -struct ipack_device *ipack_device_register(struct ipack_bus_device *bus, int slot); +int ipack_device_register(struct ipack_device *dev); void ipack_device_unregister(struct ipack_device *dev); /**