xrp-kernel: add xrp_deinit_hw

There's no easy way to get HW-specific data pointer in the driver remove handler of the HW-specific driver. Provide function xrp_deinit_hw that returns HW-specific data pointer to its second optional argument. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
foss-xtensa · Aug 22, 2018 · 95478c9 · 95478c9
1 parent d278329
commit 95478c9
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diff --git a/xrp-kernel/xrp_hw.h b/xrp-kernel/xrp_hw.h
@@ -93,6 +93,7 @@ long xrp_init_cma(struct platform_device *pdev, enum xrp_init_flags flags,
 		  const struct xrp_hw_ops *hw, void *hw_arg);
 
 int xrp_deinit(struct platform_device *pdev);
+int xrp_deinit_hw(struct platform_device *pdev, void **hw_arg);
 irqreturn_t xrp_irq_handler(int irq, struct xvp *xvp);
 int xrp_runtime_resume(struct device *dev);
 int xrp_runtime_suspend(struct device *dev);

diff --git a/xrp-kernel/xvp_main.c b/xrp-kernel/xvp_main.c
@@ -1965,6 +1965,16 @@ int xrp_deinit(struct platform_device *pdev)
 }
 EXPORT_SYMBOL(xrp_deinit);
 
+int xrp_deinit_hw(struct platform_device *pdev, void **hw_arg)
+{
+	if (hw_arg) {
+		struct xvp *xvp = platform_get_drvdata(pdev);
+		*hw_arg = xvp->hw_arg;
+	}
+	return xrp_deinit(pdev);
+}
+EXPORT_SYMBOL(xrp_deinit_hw);
+
 static void *get_hw_sync_data(void *hw_arg, size_t *sz)
 {
 	void *p = kzalloc(64, GFP_KERNEL);