staging: drm/imx: check return value of ipu_reset()
ipu_reset() can fail with a timeout. Check the return value and act appropriately. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1104,7 +1104,9 @@ static int ipu_probe(struct platform_device *pdev)
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if (ret)
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if (ret)
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goto out_failed_irq;
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goto out_failed_irq;
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ipu_reset(ipu);
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ret = ipu_reset(ipu);
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if (ret)
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goto out_failed_reset;
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/* Set MCU_T to divide MCU access window into 2 */
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/* Set MCU_T to divide MCU access window into 2 */
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ipu_cm_write(ipu, 0x00400000L | (IPU_MCU_T_DEFAULT << 18),
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ipu_cm_write(ipu, 0x00400000L | (IPU_MCU_T_DEFAULT << 18),
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@ -1129,6 +1131,7 @@ failed_add_clients:
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ipu_submodules_exit(ipu);
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ipu_submodules_exit(ipu);
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failed_submodules_init:
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failed_submodules_init:
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ipu_irq_exit(ipu);
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ipu_irq_exit(ipu);
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out_failed_reset:
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out_failed_irq:
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out_failed_irq:
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clk_disable_unprepare(ipu->clk);
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clk_disable_unprepare(ipu->clk);
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failed_clk_get:
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failed_clk_get:
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