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Commit 70224973 authored by Dean Luick's avatar Dean Luick Committed by Greg Kroah-Hartman
Browse files

staging/rdma/hfi1: Select only devices with active links 



When looking for or validating a user device, only use devices
that are currently active.

Reviewed-by: default avatarMitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: default avatarDean Luick <dean.luick@intel.com>
Signed-off-by: default avatarJubin John <jubin.john@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4ef98989

drivers/staging/rdma/hfi1/file_ops.c

+18 −3
Original line number Diff line number Diff line
@@ -850,6 +850,14 @@ static int assign_ctxt(struct file *fp, struct hfi1_user_info *uinfo) 
	return ret;

}



/* return true if the device available for general use */

static int usable_device(struct hfi1_devdata *dd)

{

	struct hfi1_pportdata *ppd = dd->pport;



	return driver_lstate(ppd) == IB_PORT_ACTIVE;

}



static int get_user_context(struct file *fp, struct hfi1_user_info *uinfo,

			    int devno, unsigned alg)

{
@@ -879,7 +887,11 @@ static int get_user_context(struct file *fp, struct hfi1_user_info *uinfo, 


			for (dev = 0; dev < devmax; dev++) {

				pdd = hfi1_lookup(dev);

				if (pdd && pdd->freectxts &&

				if (!pdd)

					continue;

				if (!usable_device(pdd))

					continue;

				if (pdd->freectxts &&

				    pdd->freectxts > free) {

					dd = pdd;

					free = pdd->freectxts;
@@ -888,7 +900,11 @@ static int get_user_context(struct file *fp, struct hfi1_user_info *uinfo, 
		} else {

			for (dev = 0; dev < devmax; dev++) {

				pdd = hfi1_lookup(dev);

				if (pdd && pdd->freectxts) {

				if (!pdd)

					continue;

				if (!usable_device(pdd))

					continue;

				if (pdd->freectxts) {

					dd = pdd;

					break;

				}
@@ -913,7 +929,6 @@ static int find_shared_ctxt(struct file *fp, 
	for (ndev = 0; ndev < devmax; ndev++) {

		struct hfi1_devdata *dd = hfi1_lookup(ndev);



		/* device portion of usable() */

		if (!(dd && (dd->flags & HFI1_PRESENT) && dd->kregbase))

			continue;

		for (i = dd->first_user_ctxt; i < dd->num_rcv_contexts; i++) {