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crypto: octeontx2 - add timeout for load_fvc completion poll

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[ Upstream commit 2157e50f65 ]

Adds timeout to exit from possible infinite loop, which polls
on CPT instruction(load_fvc) completion.

Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Bharat Bhushan <bbhushan2@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bharat Bhushan 2025-05-22 15:36:24 +05:30 committed by Greg Kroah-Hartman
parent eb6059474e
commit e6f44cd741
1 changed files with 14 additions and 2 deletions
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16
drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c
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@ -1419,6 +1419,7 @@ int otx2_cpt_discover_eng_capabilities(struct otx2_cptpf_dev *cptpf)
dma_addr_t rptr_baddr;
struct pci_dev *pdev;
u32 len, compl_rlen;
int timeout = 10000;
int ret, etype;
void *rptr;
@ -1483,16 +1484,27 @@ int otx2_cpt_discover_eng_capabilities(struct otx2_cptpf_dev *cptpf)
etype);
otx2_cpt_fill_inst(&inst, &iq_cmd, rptr_baddr);
lfs->ops->send_cmd(&inst, 1, &cptpf->lfs.lf[0]);
timeout = 10000;
while (lfs->ops->cpt_get_compcode(result) ==
OTX2_CPT_COMPLETION_CODE_INIT)
OTX2_CPT_COMPLETION_CODE_INIT) {
cpu_relax();
udelay(1);
timeout--;
if (!timeout) {
ret = -ENODEV;
cptpf->is_eng_caps_discovered = false;
dev_warn(&pdev->dev, "Timeout on CPT load_fvc completion poll\n");
goto error_no_response;
}
}
cptpf->eng_caps[etype].u = be64_to_cpup(rptr);
}
dma_unmap_single(&pdev->dev, rptr_baddr, len, DMA_BIDIRECTIONAL);
cptpf->is_eng_caps_discovered = true;
error_no_response:
dma_unmap_single(&pdev->dev, rptr_baddr, len, DMA_BIDIRECTIONAL);
free_result:
kfree(result);
lf_cleanup: