[PATCH v1] raw/ifpga: check afu device before unplug

[Zhang, Tianfei]

> -----Original Message-----
> From: Huang, Wei <wei.huang at intel.com>
> Sent: Monday, March 27, 2023 5:42 AM
> To: dev at dpdk.org; thomas at monjalon.net; david.marchand at redhat.com
> Cc: stable at dpdk.org; Xu, Rosen <rosen.xu at intel.com>; Zhang, Tianfei
> <tianfei.zhang at intel.com>; Zhang, Qi Z <qi.z.zhang at intel.com>; Huang, Wei
> <wei.huang at intel.com>
> Subject: [PATCH v1] raw/ifpga: check afu device before unplug
> 
> AFU device may be already unplugged in IFPGA bus cleanup process, unplug AFU
> device only when it exists.
> 
> Signed-off-by: Wei Huang <wei.huang at intel.com>
> ---
>  drivers/raw/ifpga/ifpga_rawdev.c | 16 +++++++++++++++-
>  1 file changed, 15 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/raw/ifpga/ifpga_rawdev.c b/drivers/raw/ifpga/ifpga_rawdev.c
> index 1020adc..0d43c87 100644
> --- a/drivers/raw/ifpga/ifpga_rawdev.c
> +++ b/drivers/raw/ifpga/ifpga_rawdev.c
> @@ -29,6 +29,7 @@
>  #include <bus_vdev_driver.h>
>  #include <rte_string_fns.h>
>  #include <rte_pmd_i40e.h>
> +#include <bus_driver.h>
> 
>  #include "base/opae_hw_api.h"
>  #include "base/opae_ifpga_hw_api.h"
> @@ -1832,12 +1833,19 @@ static int ifpga_rawdev_get_string_arg(const char *key
> __rte_unused,
>  	return ret;
>  }
> 
> +static int cmp_dev_name(const struct rte_device *dev, const void
> +*_name) {
> +	const char *name = _name;
> +	return strcmp(dev->name, name);
> +}
> +
>  static int
>  ifpga_cfg_remove(struct rte_vdev_device *vdev)  {
>  	struct rte_rawdev *rawdev = NULL;
>  	struct ifpga_rawdev *ifpga_dev;
>  	struct ifpga_vdev_args args;
> +	struct rte_bus *bus;
>  	char dev_name[RTE_RAWDEV_NAME_MAX_LEN];
>  	const char *vdev_name = NULL;
>  	char *tmp_vdev = NULL;
> @@ -1864,7 +1872,13 @@ static int ifpga_rawdev_get_string_arg(const char *key
> __rte_unused,
> 
>  	snprintf(dev_name, RTE_RAWDEV_NAME_MAX_LEN, "%d|%s",
>  		args.port, args.bdf);
> -	ret = rte_eal_hotplug_remove(RTE_STR(IFPGA_BUS_NAME), dev_name);
> +	bus = rte_bus_find_by_name(RTE_STR(IFPGA_BUS_NAME));
> +	if (bus) {
> +		if (bus->find_device(NULL, cmp_dev_name, dev_name)) {
> +			ret =
> rte_eal_hotplug_remove(RTE_STR(IFPGA_BUS_NAME),
> +				dev_name);
> +		}
> +	}
> 

It looks good for me.
Acked-by: Tianfei Zhang <tianfei.zhang at intel.com>