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Date: Sat, 31 Oct 2020 12:36:32 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Karsten Graul <kgraul@...ux.ibm.com>, Jakub Kicinski <kuba@...nel.org> Subject: [PATCH 5.9 50/74] net/smc: fix suppressed return code From: Karsten Graul <kgraul@...ux.ibm.com> [ Upstream commit 96d6fded958d971a3695009e0ed43aca6c598283 ] The patch that repaired the invalid return code in smcd_new_buf_create() missed to take care of errno ENOSPC which has a special meaning that no more DMBEs can be registered on the device. Fix that by keeping this errno value during the translation of the return code. Fixes: 6b1bbf94ab36 ("net/smc: fix invalid return code in smcd_new_buf_create()") Signed-off-by: Karsten Graul <kgraul@...ux.ibm.com> Signed-off-by: Jakub Kicinski <kuba@...nel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- net/smc/smc_core.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/net/smc/smc_core.c +++ b/net/smc/smc_core.c @@ -1616,8 +1616,11 @@ static struct smc_buf_desc *smcd_new_buf rc = smc_ism_register_dmb(lgr, bufsize, buf_desc); if (rc) { kfree(buf_desc); - return (rc == -ENOMEM) ? ERR_PTR(-EAGAIN) : - ERR_PTR(-EIO); + if (rc == -ENOMEM) + return ERR_PTR(-EAGAIN); + if (rc == -ENOSPC) + return ERR_PTR(-ENOSPC); + return ERR_PTR(-EIO); } buf_desc->pages = virt_to_page(buf_desc->cpu_addr); /* CDC header stored in buf. So, pretend it was smaller */
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