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[98.203.232.209]) by smtp.gmail.com with ESMTPSA id j190sm38540228pgd.23.2016.12.06.21.08.34 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 06 Dec 2016 21:08:35 -0800 (PST) From: Kevin Hilman To: Hans Verkuil , Laurent Pinchart , Sakari Ailus , linux-media@vger.kernel.org Subject: [PATCH v5 1/5] [media] davinci: VPIF: fix module loading, init errors Date: Tue, 6 Dec 2016 21:08:22 -0800 Message-Id: <20161207050826.23174-2-khilman@baylibre.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20161207050826.23174-1-khilman@baylibre.com> References: <20161207050826.23174-1-khilman@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161206_210858_163315_64D84CCD X-CRM114-Status: GOOD ( 17.15 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Lechner , Axel Haslam , Sekhar Nori , =?UTF-8?q?Bartosz=20Go=C5=82aszewski?= , Alexandre Bailon , Patrick Titiano , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Fix problems with automatic module loading by adding MODULE_ALIAS. Also fix various load-time errors cause by incorrect or not present platform_data. Signed-off-by: Kevin Hilman --- drivers/media/platform/davinci/vpif.c | 5 ++++- drivers/media/platform/davinci/vpif_capture.c | 15 ++++++++++++++- drivers/media/platform/davinci/vpif_display.c | 6 ++++++ 3 files changed, 24 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/davinci/vpif.c b/drivers/media/platform/davinci/vpif.c index 0380cf2e5775..f50148dcba64 100644 --- a/drivers/media/platform/davinci/vpif.c +++ b/drivers/media/platform/davinci/vpif.c @@ -32,6 +32,9 @@ MODULE_DESCRIPTION("TI DaVinci Video Port Interface driver"); MODULE_LICENSE("GPL"); +#define VPIF_DRIVER_NAME "vpif" +MODULE_ALIAS("platform:" VPIF_DRIVER_NAME); + #define VPIF_CH0_MAX_MODES 22 #define VPIF_CH1_MAX_MODES 2 #define VPIF_CH2_MAX_MODES 15 @@ -466,7 +469,7 @@ static const struct dev_pm_ops vpif_pm = { static struct platform_driver vpif_driver = { .driver = { - .name = "vpif", + .name = VPIF_DRIVER_NAME, .pm = vpif_pm_ops, }, .remove = vpif_remove, diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c index 5104cc0ee40e..20c4344ed118 100644 --- a/drivers/media/platform/davinci/vpif_capture.c +++ b/drivers/media/platform/davinci/vpif_capture.c @@ -45,6 +45,7 @@ module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Debug level 0-1"); #define VPIF_DRIVER_NAME "vpif_capture" +MODULE_ALIAS("platform:" VPIF_DRIVER_NAME); /* global variables */ static struct vpif_device vpif_obj = { {NULL} }; @@ -647,6 +648,10 @@ static int vpif_input_to_subdev( vpif_dbg(2, debug, "vpif_input_to_subdev\n"); + if (!chan_cfg) + return -1; + if (input_index >= chan_cfg->input_count) + return -1; subdev_name = chan_cfg->inputs[input_index].subdev_name; if (subdev_name == NULL) return -1; @@ -654,7 +659,7 @@ static int vpif_input_to_subdev( /* loop through the sub device list to get the sub device info */ for (i = 0; i < vpif_cfg->subdev_count; i++) { subdev_info = &vpif_cfg->subdev_info[i]; - if (!strcmp(subdev_info->name, subdev_name)) + if (subdev_info && !strcmp(subdev_info->name, subdev_name)) return i; } return -1; @@ -685,6 +690,9 @@ static int vpif_set_input( if (sd_index >= 0) { sd = vpif_obj.sd[sd_index]; subdev_info = &vpif_cfg->subdev_info[sd_index]; + } else { + /* no subdevice, no input to setup */ + return 0; } /* first setup input path from sub device to vpif */ @@ -1435,6 +1443,11 @@ static __init int vpif_probe(struct platform_device *pdev) int res_idx = 0; int i, err; + if (!pdev->dev.platform_data) { + dev_warn(&pdev->dev, "Missing platform data. Giving up.\n"); + return -EINVAL; + } + vpif_dev = &pdev->dev; err = initialize_vpif(); diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c index 75b27233ec2f..7f632b757d32 100644 --- a/drivers/media/platform/davinci/vpif_display.c +++ b/drivers/media/platform/davinci/vpif_display.c @@ -42,6 +42,7 @@ module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Debug level 0-1"); #define VPIF_DRIVER_NAME "vpif_display" +MODULE_ALIAS("platform:" VPIF_DRIVER_NAME); /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */ static int ycmux_mode; @@ -1249,6 +1250,11 @@ static __init int vpif_probe(struct platform_device *pdev) int res_idx = 0; int i, err; + if (!pdev->dev.platform_data) { + dev_warn(&pdev->dev, "Missing platform data. Giving up.\n"); + return -EINVAL; + } + vpif_dev = &pdev->dev; err = initialize_vpif();