From patchwork series 436003

https://patchwork.ozlabs.org//project/linuxppc-dev/list/?series=436003

Author: Fox Snowpatch

Documentation/ABI/testing/sysfs-class-cxl Documentation/ABI/obsolete/sysfs-class-cxl

@@ -1,3 +1,6 @@
+The cxl driver is no longer maintained, and will be removed from the kernel in
+the near future.
+
 Please note that attributes that are shared between devices are stored in
 the directory pointed to by the symlink device/.
 For example, the real path of the attribute /sys/class/cxl/afu0.0s/irqs_max is

MAINTAINERS

@@ -6228,8 +6228,8 @@ CXL (IBM Coherent Accelerator Processor Interface CAPI) DRIVER
 M:	Frederic Barrat <[email protected]>
 M:	Andrew Donnellan <[email protected]>
 L:	[email protected]
-S:	Supported
-F:	Documentation/ABI/testing/sysfs-class-cxl
+S:	Obsolete
+F:	Documentation/ABI/obsolete/sysfs-class-cxl
 F:	Documentation/arch/powerpc/cxl.rst
 F:	arch/powerpc/platforms/powernv/pci-cxl.c
 F:	drivers/misc/cxl/

drivers/misc/cxl/Kconfig

@@ -9,11 +9,13 @@ config CXL_BASE
 	select PPC_64S_HASH_MMU
 
 config CXL
-	tristate "Support for IBM Coherent Accelerators (CXL)"
+	tristate "Support for IBM Coherent Accelerators (CXL) (DEPRECATED)"
 	depends on PPC_POWERNV && PCI_MSI && EEH
 	select CXL_BASE
-	default m
 	help
+	  The cxl driver is deprecated and will be removed in a future
+	  kernel release.
+
 	  Select this option to enable driver support for IBM Coherent
 	  Accelerators (CXL).  CXL is otherwise known as Coherent Accelerator
 	  Processor Interface (CAPI).  CAPI allows accelerators in FPGAs to be

drivers/misc/cxl/of.c

@@ -295,6 +295,8 @@ int cxl_of_probe(struct platform_device *pdev)
 	int ret;
 	int slice = 0, slice_ok = 0;
 
+	dev_err_once(&pdev->dev, "DEPRECATION: cxl is deprecated and will be removed in a future kernel release\n");
+
 	pr_devel("in %s\n", __func__);
 
 	np = pdev->dev.of_node;

drivers/misc/cxl/pci.c

@@ -1726,6 +1726,8 @@ static int cxl_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	int slice;
 	int rc;
 
+	dev_err_once(&dev->dev, "DEPRECATED: cxl is deprecated and will be removed in a future kernel release\n");
+
 	if (cxl_pci_is_vphb_device(dev)) {
 		dev_dbg(&dev->dev, "cxl_init_adapter: Ignoring cxl vphb device\n");
 		return -ENODEV;

drivers/scsi/cxlflash/Kconfig

@@ -4,10 +4,12 @@
 #
 
 config CXLFLASH
-	tristate "Support for IBM CAPI Flash"
+	tristate "Support for IBM CAPI Flash (DEPRECATED)"
 	depends on PCI && SCSI && (CXL || OCXL) && EEH
 	select IRQ_POLL
-	default m
 	help
+	  The cxlflash driver is deprecated and will be removed in a future
+	  kernel release.
+
 	  Allows CAPI Accelerated IO to Flash
 	  If unsure, say N.

drivers/scsi/cxlflash/main.c

@@ -3651,6 +3651,8 @@ static int cxlflash_probe(struct pci_dev *pdev,
 	int rc = 0;
 	int k;
 
+	dev_err_once(&pdev->dev, "DEPRECATION: cxlflash is deprecated and will be removed in a future kernel release\n");
+
 	dev_dbg(&pdev->dev, "%s: Found CXLFLASH with IRQ: %d\n",
 		__func__, pdev->irq);